102121010022121 has 4 divisors (see below), whose sum is σ = 102855693547600. Its totient is φ = 101386326496644.

The previous prime is 102121010022107. The next prime is 102121010022133. The reversal of 102121010022121 is 121220010121201.

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 102121010022121 - 2²⁵ = 102120976467689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102121010022095 and 102121010022104.

It is not an unprimeable number, because it can be changed into a prime (102121010022151) 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, 367341762531 + ... + 367341762808.

It is an arithmetic number, because the mean of its divisors is an integer number (25713923386900).

Almost surely, 2^{102121010022121} is an apocalyptic number.

It is an amenable number.

102121010022121 is a deficient number, since it is larger than the sum of its proper divisors (734683525479).

102121010022121 is an equidigital number, since it uses as much as digits as its factorization.

102121010022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734683525478.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102121010022121 its reverse (121220010121201), we get a palindrome (223341020143322).

The spelling of 102121010022121 in words is "one hundred two trillion, one hundred twenty-one billion, ten million, twenty-two thousand, one hundred twenty-one".