20221231132188 has 18 divisors (see below), whose sum is σ = 51114778695344. Its totient is φ = 6740410377384.

The previous prime is 20221231132121. The next prime is 20221231132189. The reversal of 20221231132188 is 88123113212202.

20221231132188 is a `hidden beast` number, since 2 + 0 + 2 + 2 + 12 + 311 + 321 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 561700864783 = 20221231132188 / (2 + 0 + 2 + 2 + 1 + 2 + 3 + 1 + 1 + 3 + 2 + 1 + 8 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221231132189) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280850432356 + ... + 280850432427.

Almost surely, 2^{20221231132188} is an apocalyptic number.

It is an amenable number.

20221231132188 is an abundant number, since it is smaller than the sum of its proper divisors (30893547563156).

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

20221231132188 is a wasteful number, since it uses less digits than its factorization.

20221231132188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561700864793 (or 561700864788 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 20221231132188 in words is "twenty trillion, two hundred twenty-one billion, two hundred thirty-one million, one hundred thirty-two thousand, one hundred eighty-eight".