102120010102021 has 8 divisors (see below), whose sum is σ = 102153671938080. Its totient is φ = 102086349382992.

The previous prime is 102120010101961. The next prime is 102120010102049. The reversal of 102120010102021 is 120201010021201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102120010102021 - 2²¹ = 102120008004869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102120010101992 and 102120010102010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120010102421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208042746 + ... + 208533028.

It is an arithmetic number, because the mean of its divisors is an integer number (12769208992260).

Almost surely, 2^{102120010102021} is an apocalyptic number.

It is an amenable number.

102120010102021 is a deficient number, since it is larger than the sum of its proper divisors (33661836059).

102120010102021 is an equidigital number, since it uses as much as digits as its factorization.

102120010102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558515.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102120010102021 its reverse (120201010021201), we get a palindrome (222321020123222).

The spelling of 102120010102021 in words is "one hundred two trillion, one hundred twenty billion, ten million, one hundred two thousand, twenty-one".