12920224738920 has 32 divisors (see below), whose sum is σ = 38760674217120. Its totient is φ = 3445393263680.

The previous prime is 12920224738919. The next prime is 12920224738951. The reversal of 12920224738920 is 2983742202921.

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 7 ways as a sum of consecutive naturals, for example, 53834269626 + ... + 53834269865.

It is an arithmetic number, because the mean of its divisors is an integer number (1211271069285).

Almost surely, 2^{12920224738920} is an apocalyptic number.

12920224738920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12920224738920 is an abundant number, since it is smaller than the sum of its proper divisors (25840449478200).

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

12920224738920 is a wasteful number, since it uses less digits than its factorization.

12920224738920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107668539505 (or 107668539501 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 12920224738920 in words is "twelve trillion, nine hundred twenty billion, two hundred twenty-four million, seven hundred thirty-eight thousand, nine hundred twenty".