102021020112121 has 32 divisors (see below), whose sum is σ = 112546790893440. Its totient is φ = 91706290368000.

The previous prime is 102021020112097. The next prime is 102021020112157. The reversal of 102021020112121 is 121211020120201.

It is not a de Polignac number, because 102021020112121 - 2⁷ = 102021020111993 is a prime.

It is a super-2 number, since 2×102021020112121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102021020112095 and 102021020112104.

It is not an unprimeable number, because it can be changed into a prime (102021021112121) 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, 2730955975 + ... + 2730993331.

It is an arithmetic number, because the mean of its divisors is an integer number (3517087215420).

Almost surely, 2^{102021020112121} is an apocalyptic number.

102021020112121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102021020112121 is a deficient number, since it is larger than the sum of its proper divisors (10525770781319).

102021020112121 is a wasteful number, since it uses less digits than its factorization.

102021020112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40665.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102021020112121 its reverse (121211020120201), we get a palindrome (223232040232322).

The spelling of 102021020112121 in words is "one hundred two trillion, twenty-one billion, twenty million, one hundred twelve thousand, one hundred twenty-one".