102110221212021 has 24 divisors (see below), whose sum is σ = 165249629092704. Its totient is φ = 60212415454560.

The previous prime is 102110221212001. The next prime is 102110221212029. The reversal of 102110221212021 is 120212122011201.

102110221212021 is a `hidden beast` number, since 1 + 0 + 211 + 0 + 221 + 212 + 0 + 21 = 666.

It is not a de Polignac number, because 102110221212021 - 2¹⁰ = 102110221210997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102110221211985 and 102110221212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102110221212029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13938055471 + ... + 13938062796.

It is an arithmetic number, because the mean of its divisors is an integer number (6885401212196).

Almost surely, 2^{102110221212021} is an apocalyptic number.

102110221212021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102110221212021 is a deficient number, since it is larger than the sum of its proper divisors (63139407880683).

102110221212021 is a wasteful number, since it uses less digits than its factorization.

102110221212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27876118321 (or 27876118318 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 102110221212021 its reverse (120212122011201), we get a palindrome (222322343223222).

The spelling of 102110221212021 in words is "one hundred two trillion, one hundred ten billion, two hundred twenty-one million, two hundred twelve thousand, twenty-one".