102112001020221 has 4 divisors (see below), whose sum is σ = 136149334693632. Its totient is φ = 68074667346812.

The previous prime is 102112001020217. The next prime is 102112001020259. The reversal of 102112001020221 is 122020100211201.

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 102112001020221 - 2² = 102112001020217 is a prime.

It is a super-2 number, since 2×102112001020221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102112001020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102112001020201) 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, 17018666836701 + ... + 17018666836706.

It is an arithmetic number, because the mean of its divisors is an integer number (34037333673408).

Almost surely, 2^{102112001020221} is an apocalyptic number.

It is an amenable number.

102112001020221 is a deficient number, since it is larger than the sum of its proper divisors (34037333673411).

102112001020221 is an equidigital number, since it uses as much as digits as its factorization.

102112001020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34037333673410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102112001020221 its reverse (122020100211201), we get a palindrome (224132101231422).

The spelling of 102112001020221 in words is "one hundred two trillion, one hundred twelve billion, one million, twenty thousand, two hundred twenty-one".