221053454400 has 84 divisors (see below), whose sum is σ = 725239557392. Its totient is φ = 58947586560.

The previous prime is 221053454339. The next prime is 221053454437. The reversal of 221053454400 is 4454350122.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 23021602 + ... + 23031201.

Almost surely, 2^221053454400 is an apocalyptic number.

221053454400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221053454400 is an abundant number, since it is smaller than the sum of its proper divisors (504186102992).

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

221053454400 is a wasteful number, since it uses less digits than its factorization.

221053454400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46052828 (or 46052813 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 221053454400 in words is "two hundred twenty-one billion, fifty-three million, four hundred fifty-four thousand, four hundred".