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122102200100221 = 1111100200009111
BaseRepresentation
bin11011110000110100100010…
…010000110110010101111101
3121000022212010021010220021121
4123300310202100312111331
5112001010301211201341
61111404550520430541
734501410226205125
oct3360644220662575
9530285107126247
10122102200100221
11359a6285838a40
1211840283918451
13531925a238913
142221ac6c45c85
15e1b259aa94d1
hex6f0d2243657d

122102200100221 has 4 divisors (see below), whose sum is σ = 133202400109344. Its totient is φ = 111002000091100.

The previous prime is 122102200100201. The next prime is 122102200100299. The reversal of 122102200100221 is 122001002201221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122102200100221 - 211 = 122102200098173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122102200100195 and 122102200100204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122102200100201) 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, 5550100004545 + ... + 5550100004566.

It is an arithmetic number, because the mean of its divisors is an integer number (33300600027336).

Almost surely, 2122102200100221 is an apocalyptic number.

122102200100221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122102200100221 is a deficient number, since it is larger than the sum of its proper divisors (11100200009123).

122102200100221 is a wasteful number, since it uses less digits than its factorization.

122102200100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11100200009122.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122102200100221 its reverse (122001002201221), we get a palindrome (244103202301442).

The spelling of 122102200100221 in words is "one hundred twenty-two trillion, one hundred two billion, two hundred million, one hundred thousand, two hundred twenty-one".

Divisors: 1 11 11100200009111 122102200100221