221153372 has 24 divisors (see below), whose sum is σ = 440560512. Its totient is φ = 96153200.

The previous prime is 221153371. The next prime is 221153381. The reversal of 221153372 is 273351122.

221153372 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221153371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108254 + ... + 110277.

It is an arithmetic number, because the mean of its divisors is an integer number (18356688).

Almost surely, 2^221153372 is an apocalyptic number.

221153372 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221153372 is a deficient number, since it is larger than the sum of its proper divisors (219407140).

221153372 is a wasteful number, since it uses less digits than its factorization.

221153372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218569 (or 218567 counting only the distinct ones).

The product of its digits is 2520, while the sum is 26.

The square root of 221153372 is about 14871.2263112361. The cubic root of 221153372 is about 604.7341882643.

The spelling of 221153372 in words is "two hundred twenty-one million, one hundred fifty-three thousand, three hundred seventy-two".