21223233232290 has 80 divisors (see below), whose sum is σ = 58609265189112. Its totient is φ = 5506568614656.

The previous prime is 21223233232147. The next prime is 21223233232291. The reversal of 21223233232290 is 9223233232212.

21223233232290 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 3 + 2 + 332 + 32 + 290 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 15626975891409 + 5596257340881 = 3953097^2 + 2365641^2 .

It is not an unprimeable number, because it can be changed into a prime (21223233232291) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 354044659 + ... + 354104598.

Almost surely, 2^{21223233232290} is an apocalyptic number.

21223233232290 is an abundant number, since it is smaller than the sum of its proper divisors (37386031956822).

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

21223233232290 is a wasteful number, since it uses less digits than its factorization.

21223233232290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708149313 (or 708149304 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The spelling of 21223233232290 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred thirty-three million, two hundred thirty-two thousand, two hundred ninety".