222401372 has 6 divisors (see below), whose sum is σ = 389202408. Its totient is φ = 111200684.

The previous prime is 222401371. The next prime is 222401383. The reversal of 222401372 is 273104222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222401371) 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 as a sum of consecutive naturals, namely, 27800168 + ... + 27800175.

It is an arithmetic number, because the mean of its divisors is an integer number (64867068).

Almost surely, 2^222401372 is an apocalyptic number.

It is an amenable number.

222401372 is a deficient number, since it is larger than the sum of its proper divisors (166801036).

222401372 is a wasteful number, since it uses less digits than its factorization.

222401372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55600347 (or 55600345 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 222401372 is about 14913.1275056576. The cubic root of 222401372 is about 605.8695889323.

Adding to 222401372 its reverse (273104222), we get a palindrome (495505594).

The spelling of 222401372 in words is "two hundred twenty-two million, four hundred one thousand, three hundred seventy-two".