221168432643400 has 48 divisors (see below), whose sum is σ = 560963570073840. Its totient is φ = 80424884596800.

The previous prime is 221168432643281. The next prime is 221168432643437. The reversal of 221168432643400 is 4346234861122.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50265550674 + ... + 50265555073.

It is an arithmetic number, because the mean of its divisors is an integer number (11686741043205).

Almost surely, 2^{221168432643400} is an apocalyptic number.

221168432643400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221168432643400 is an abundant number, since it is smaller than the sum of its proper divisors (339795137430440).

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

221168432643400 is a wasteful number, since it uses less digits than its factorization.

221168432643400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100531105774 (or 100531105765 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 46.

The spelling of 221168432643400 in words is "two hundred twenty-one trillion, one hundred sixty-eight billion, four hundred thirty-two million, six hundred forty-three thousand, four hundred".