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120121110101 = 177065947653
BaseRepresentation
bin110111111011111000…
…1101010111001010101
3102111001110001122022202
41233313301222321111
53432002001010401
6131103300134245
711451466406036
oct1576761527125
9374043048282
10120121110101
1146a41264a13
121b344397385
13b43430c655
145b57470a8d
1531d092a06b
hex1bf7c6ae55

120121110101 has 4 divisors (see below), whose sum is σ = 127187057772. Its totient is φ = 113055162432.

The previous prime is 120121110073. The next prime is 120121110119. The reversal of 120121110101 is 101011121021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101011121021 = 169959453279.

It can be written as a sum of positive squares in 2 ways, for example, as 107732307076 + 12388803025 = 328226^2 + 111305^2 .

It is a cyclic number.

It is not a de Polignac number, because 120121110101 - 210 = 120121109077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121119101) 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, 3532973810 + ... + 3532973843.

It is an arithmetic number, because the mean of its divisors is an integer number (31796764443).

Almost surely, 2120121110101 is an apocalyptic number.

It is an amenable number.

120121110101 is a deficient number, since it is larger than the sum of its proper divisors (7065947671).

120121110101 is an equidigital number, since it uses as much as digits as its factorization.

120121110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7065947670.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 120121110101 its reverse (101011121021), we get a palindrome (221132231122).

The spelling of 120121110101 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred ten thousand, one hundred one".

Divisors: 1 17 7065947653 120121110101