102021544881 has 12 divisors (see below), whose sum is σ = 150791534608. Its totient is φ = 66432633624.

The previous prime is 102021544879. The next prime is 102021544927. The reversal of 102021544881 is 188445120201.

102021544881 is a `hidden beast` number, since 1 + 0 + 20 + 2 + 154 + 488 + 1 = 666.

It is not a de Polignac number, because 102021544881 - 2¹ = 102021544879 is a prime.

It is a super-2 number, since 2×102021544881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102021544861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131810395 + ... + 131811168.

Almost surely, 2^102021544881 is an apocalyptic number.

It is an amenable number.

102021544881 is a deficient number, since it is larger than the sum of its proper divisors (48769989727).

102021544881 is a wasteful number, since it uses less digits than its factorization.

102021544881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263621612 (or 263621609 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The spelling of 102021544881 in words is "one hundred two billion, twenty-one million, five hundred forty-four thousand, eight hundred eighty-one".