128922229188 has 36 divisors (see below), whose sum is σ = 326169493468. Its totient is φ = 42936791040.

The previous prime is 128922229181. The next prime is 128922229207. The reversal of 128922229188 is 881922229821.

It is a happy number.

128922229188 is a `hidden beast` number, since 128 + 9 + 222 + 291 + 8 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 87043881024 + 41878348164 = 295032^2 + 204642^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (128922229181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1511473 + ... + 1594488.

Almost surely, 2^128922229188 is an apocalyptic number.

128922229188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128922229188 is an abundant number, since it is smaller than the sum of its proper divisors (197247264280).

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

128922229188 is a wasteful number, since it uses less digits than its factorization.

128922229188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107124 (or 3107119 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 54.

The spelling of 128922229188 in words is "one hundred twenty-eight billion, nine hundred twenty-two million, two hundred twenty-nine thousand, one hundred eighty-eight".