22229131309920 has 72 divisors (see below), whose sum is σ = 75856910600016. Its totient is φ = 5927768348928.

The previous prime is 22229131309871. The next prime is 22229131309933. The reversal of 22229131309920 is 2990313192222.

22229131309920 is a `hidden beast` number, since 2 + 2 + 2 + 291 + 31 + 309 + 9 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7718446932 + ... + 7718449811.

It is an arithmetic number, because the mean of its divisors is an integer number (1053568202778).

Almost surely, 2^{22229131309920} is an apocalyptic number.

22229131309920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22229131309920 is an abundant number, since it is smaller than the sum of its proper divisors (53627779290096).

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

22229131309920 is a wasteful number, since it uses less digits than its factorization.

22229131309920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15436896764 (or 15436896753 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 22229131309920 in words is "twenty-two trillion, two hundred twenty-nine billion, one hundred thirty-one million, three hundred nine thousand, nine hundred twenty".