102130212021 has 32 divisors (see below), whose sum is σ = 144838955520. Its totient is φ = 63898329600.

The previous prime is 102130212017. The next prime is 102130212091. The reversal of 102130212021 is 120212031201.

It is not a de Polignac number, because 102130212021 - 2² = 102130212017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102130212091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 913831 + ... + 1019483.

It is an arithmetic number, because the mean of its divisors is an integer number (4526217360).

Almost surely, 2^102130212021 is an apocalyptic number.

It is an amenable number.

102130212021 is a deficient number, since it is larger than the sum of its proper divisors (42708743499).

102130212021 is a wasteful number, since it uses less digits than its factorization.

102130212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105997.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 102130212021 its reverse (120212031201), we get a palindrome (222342243222).

The spelling of 102130212021 in words is "one hundred two billion, one hundred thirty million, two hundred twelve thousand, twenty-one".