102021000120122 has 4 divisors (see below), whose sum is σ = 153031500180186. Its totient is φ = 51010500060060.

The previous prime is 102021000120113. The next prime is 102021000120163. The reversal of 102021000120122 is 221021000120201.

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

It can be written as a sum of positive squares in only one way, i.e., 90707928413041 + 11313071707081 = 9524071^2 + 3363491^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102021000120097 and 102021000120106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505250030029 + ... + 25505250030032.

Almost surely, 2^{102021000120122} is an apocalyptic number.

102021000120122 is a deficient number, since it is larger than the sum of its proper divisors (51010500060064).

102021000120122 is an equidigital number, since it uses as much as digits as its factorization.

102021000120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51010500060063.

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

Adding to 102021000120122 its reverse (221021000120201), we get a palindrome (323042000240323).

The spelling of 102021000120122 in words is "one hundred two trillion, twenty-one billion, one hundred twenty thousand, one hundred twenty-two".