221029452509932 has 96 divisors (see below), whose sum is σ = 447793131824640. Its totient is φ = 94467031211520.

The previous prime is 221029452509903. The next prime is 221029452509953. The reversal of 221029452509932 is 239905254920122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1786222368 + ... + 1786346104.

It is an arithmetic number, because the mean of its divisors is an integer number (4664511789840).

Almost surely, 2^{221029452509932} is an apocalyptic number.

221029452509932 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221029452509932 is an abundant number, since it is smaller than the sum of its proper divisors (226763679314708).

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

221029452509932 is a wasteful number, since it uses less digits than its factorization.

221029452509932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153751 (or 153749 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 221029452509932 in words is "two hundred twenty-one trillion, twenty-nine billion, four hundred fifty-two million, five hundred nine thousand, nine hundred thirty-two".