20202222121020 has 72 divisors (see below), whose sum is σ = 61280985305904. Its totient is φ = 5387179097088.

The previous prime is 20202222121007. The next prime is 20202222121031. The reversal of 20202222121020 is 2012122220202.

20202222121020 is a `hidden beast` number, since 202 + 0 + 222 + 212 + 10 + 20 = 666.

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 = 20202222120984 and 20202222121002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11832207 + ... + 13431513.

Almost surely, 2^{20202222121020} is an apocalyptic number.

20202222121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202222121020 is an abundant number, since it is smaller than the sum of its proper divisors (41078763184884).

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

20202222121020 is a wasteful number, since it uses less digits than its factorization.

20202222121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669499 (or 1669494 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20202222121020 its reverse (2012122220202), we get a palindrome (22214344341222).

It can be divided in two parts, 20202 and 222121020, that added together give a palindrome (222141222).

The spelling of 20202222121020 in words is "twenty trillion, two hundred two billion, two hundred twenty-two million, one hundred twenty-one thousand, twenty".