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122021102211101 = 271428144955221
BaseRepresentation
bin11011101111101001000000…
…011100111101000000011101
3121000001002210102011021112122
4123233221000130331000131
5111443143204131223401
61111303415343312325
734462506443421452
oct3357510034750035
9530032712137478
10122021102211101
113597494a129585
12118286102ab6a5
135311704811b92
14221bbd235b829
15e190b002021b
hex6efa4073d01d

122021102211101 has 4 divisors (see below), whose sum is σ = 122021149880604. Its totient is φ = 122021054541600.

The previous prime is 122021102211083. The next prime is 122021102211119. The reversal of 122021102211101 is 101112201120221.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (122021102211083) and next prime (122021102211119).

It can be written as a sum of positive squares in 2 ways, for example, as 55979052067225 + 66042050143876 = 7481915^2 + 8126626^2 .

It is a cyclic number.

It is not a de Polignac number, because 122021102211101 - 26 = 122021102211037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122021102211101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021102214101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19763330 + ... + 25191891.

It is an arithmetic number, because the mean of its divisors is an integer number (30505287470151).

Almost surely, 2122021102211101 is an apocalyptic number.

It is an amenable number.

122021102211101 is a deficient number, since it is larger than the sum of its proper divisors (47669503).

122021102211101 is an equidigital number, since it uses as much as digits as its factorization.

122021102211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47669502.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 122021102211101 its reverse (101112201120221), we get a palindrome (223133303331322).

The spelling of 122021102211101 in words is "one hundred twenty-two trillion, twenty-one billion, one hundred two million, two hundred eleven thousand, one hundred one".

Divisors: 1 2714281 44955221 122021102211101