221870200 has 24 divisors (see below), whose sum is σ = 515848680. Its totient is φ = 88748000.

The previous prime is 221870197. The next prime is 221870249. The reversal of 221870200 is 2078122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 554476 + ... + 554875.

It is an arithmetic number, because the mean of its divisors is an integer number (21493695).

Almost surely, 2^221870200 is an apocalyptic number.

221870200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221870200 is an abundant number, since it is smaller than the sum of its proper divisors (293978480).

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

221870200 is a wasteful number, since it uses less digits than its factorization.

221870200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109367 (or 1109358 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 221870200 is about 14895.3079860740. The cubic root of 221870200 is about 605.3868618313.

The spelling of 221870200 in words is "two hundred twenty-one million, eight hundred seventy thousand, two hundred".