202122021112020 has 72 divisors (see below), whose sum is σ = 617931050440704. Its totient is φ = 53474802429888.

The previous prime is 202122021112009. The next prime is 202122021112027. The reversal of 202122021112020 is 20211120221202.

It is a happy number.

202122021112020 is a `hidden beast` number, since 20 + 212 + 20 + 211 + 1 + 202 + 0 = 666.

It is a super-2 number, since 2×202122021112020² (a number of 29 digits) contains 22 as substring.

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 = 202122021111984 and 202122021112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202122021112027) 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, 4420843744 + ... + 4420889463.

Almost surely, 2^{202122021112020} is an apocalyptic number.

202122021112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202122021112020 is an abundant number, since it is smaller than the sum of its proper divisors (415809029328684).

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

202122021112020 is a wasteful number, since it uses less digits than its factorization.

202122021112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8841733349 (or 8841733344 counting only the distinct ones).

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

Adding to 202122021112020 its reverse (20211120221202), we get a palindrome (222333141333222).

The spelling of 202122021112020 in words is "two hundred two trillion, one hundred twenty-two billion, twenty-one million, one hundred twelve thousand, twenty".