102122000102021 has 4 divisors (see below), whose sum is σ = 102122574163500. Its totient is φ = 102121426040544.

The previous prime is 102122000101973. The next prime is 102122000102039. The reversal of 102122000102021 is 120201000221201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33974746233796 + 68147253868225 = 5828786^2 + 8255135^2 .

It is a cyclic number.

It is not a de Polignac number, because 102122000102021 - 2¹⁰ = 102122000100997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102122000101987 and 102122000102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102122000102041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286763816 + ... + 287119713.

It is an arithmetic number, because the mean of its divisors is an integer number (25530643540875).

Almost surely, 2^{102122000102021} is an apocalyptic number.

It is an amenable number.

102122000102021 is a deficient number, since it is larger than the sum of its proper divisors (574061479).

102122000102021 is an equidigital number, since it uses as much as digits as its factorization.

102122000102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574061478.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102122000102021 its reverse (120201000221201), we get a palindrome (222323000323222).

The spelling of 102122000102021 in words is "one hundred two trillion, one hundred twenty-two billion, one hundred two thousand, twenty-one".