102100222102121 has 4 divisors (see below), whose sum is σ = 103830734341200. Its totient is φ = 100369709863044.

The previous prime is 102100222102091. The next prime is 102100222102133. The reversal of 102100222102121 is 121201222001201.

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 a de Polignac number, because none of the positive numbers 2^k-102100222102121 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 102100222102121.

It is not an unprimeable number, because it can be changed into a prime (102100222102171) 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, 865256119451 + ... + 865256119568.

It is an arithmetic number, because the mean of its divisors is an integer number (25957683585300).

Almost surely, 2^{102100222102121} is an apocalyptic number.

It is an amenable number.

102100222102121 is a deficient number, since it is larger than the sum of its proper divisors (1730512239079).

102100222102121 is an equidigital number, since it uses as much as digits as its factorization.

102100222102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730512239078.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102100222102121 its reverse (121201222001201), we get a palindrome (223301444103322).

The spelling of 102100222102121 in words is "one hundred two trillion, one hundred billion, two hundred twenty-two million, one hundred two thousand, one hundred twenty-one".