20221372120 has 32 divisors (see below), whose sum is σ = 46466136000. Its totient is φ = 7916451328.

The previous prime is 20221372111. The next prime is 20221372133. The reversal of 20221372120 is 2127312202.

It is a junction number, because it is equal to n+sod(n) for n = 20221372091 and 20221372100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5376145 + ... + 5379904.

It is an arithmetic number, because the mean of its divisors is an integer number (1452066750).

Almost surely, 2^20221372120 is an apocalyptic number.

20221372120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221372120 is an abundant number, since it is smaller than the sum of its proper divisors (26244763880).

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

20221372120 is a wasteful number, since it uses less digits than its factorization.

20221372120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10756107 (or 10756103 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 20221372120 its reverse (2127312202), we get a palindrome (22348684322).

The spelling of 20221372120 in words is "twenty billion, two hundred twenty-one million, three hundred seventy-two thousand, one hundred twenty".