102021112222020 has 36 divisors (see below), whose sum is σ = 309464040407340. Its totient is φ = 27205629925824.

The previous prime is 102021112221983. The next prime is 102021112222027. The reversal of 102021112222020 is 20222211120201.

It is a happy number.

102021112222020 is a `hidden beast` number, since 10 + 20 + 211 + 1 + 222 + 202 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 42564428836164 + 59456683385856 = 6524142^2 + 7710816^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 102021112221984 and 102021112222002.

It is not an unprimeable number, because it can be changed into a prime (102021112222027) 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, 283391978215 + ... + 283391978574.

Almost surely, 2^{102021112222020} is an apocalyptic number.

102021112222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021112222020 is an abundant number, since it is smaller than the sum of its proper divisors (207442928185320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102021112222020 is a wasteful number, since it uses less digits than its factorization.

102021112222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566783956804 (or 566783956799 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 102021112222020 its reverse (20222211120201), we get a palindrome (122243323342221).

The spelling of 102021112222020 in words is "one hundred two trillion, twenty-one billion, one hundred twelve million, two hundred twenty-two thousand, twenty".