102110012121021 has 16 divisors (see below), whose sum is σ = 136203224002560. Its totient is φ = 68045072079600.

The previous prime is 102110012120989. The next prime is 102110012121023. The reversal of 102110012121021 is 120121210011201.

It is a happy number.

It is not a de Polignac number, because 102110012121021 - 2⁵ = 102110012120989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102110012121023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393839196 + ... + 394098378.

It is an arithmetic number, because the mean of its divisors is an integer number (8512701500160).

Almost surely, 2^{102110012121021} is an apocalyptic number.

It is an amenable number.

102110012121021 is a deficient number, since it is larger than the sum of its proper divisors (34093211881539).

102110012121021 is a wasteful number, since it uses less digits than its factorization.

102110012121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313216.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102110012121021 its reverse (120121210011201), we get a palindrome (222231222132222).

The spelling of 102110012121021 in words is "one hundred two trillion, one hundred ten billion, twelve million, one hundred twenty-one thousand, twenty-one".