221331044 has 12 divisors (see below), whose sum is σ = 422541168. Its totient is φ = 100605000.

The previous prime is 221331043. The next prime is 221331053. The reversal of 221331044 is 440133122.

221331044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (221331043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2515082 + ... + 2515169.

It is an arithmetic number, because the mean of its divisors is an integer number (35211764).

Almost surely, 2^221331044 is an apocalyptic number.

It is an amenable number.

221331044 is a deficient number, since it is larger than the sum of its proper divisors (201210124).

221331044 is a wasteful number, since it uses less digits than its factorization.

221331044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5030266 (or 5030264 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 221331044 is about 14877.1987954722. The cubic root of 221331044 is about 604.8960903437.

Adding to 221331044 its reverse (440133122), we get a palindrome (661464166).

The spelling of 221331044 in words is "two hundred twenty-one million, three hundred thirty-one thousand, forty-four".