102031212123021 has 16 divisors (see below), whose sum is σ = 136240534729728. Its totient is φ = 67921395628800.

The previous prime is 102031212122989. The next prime is 102031212123047. The reversal of 102031212123021 is 120321212130201.

It is not a de Polignac number, because 102031212123021 - 2⁵ = 102031212122989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102031212123091) 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, 2866681 + ... + 14569841.

It is an arithmetic number, because the mean of its divisors is an integer number (8515033420608).

Almost surely, 2^{102031212123021} is an apocalyptic number.

It is an amenable number.

102031212123021 is a deficient number, since it is larger than the sum of its proper divisors (34209322606707).

102031212123021 is a wasteful number, since it uses less digits than its factorization.

102031212123021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11707412.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 102031212123021 its reverse (120321212130201), we get a palindrome (222352424253222).

The spelling of 102031212123021 in words is "one hundred two trillion, thirty-one billion, two hundred twelve million, one hundred twenty-three thousand, twenty-one".