222131376 has 80 divisors (see below), whose sum is σ = 641625600. Its totient is φ = 73576512.

The previous prime is 222131369. The next prime is 222131417. The reversal of 222131376 is 673131222.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70605 + ... + 73683.

It is an arithmetic number, because the mean of its divisors is an integer number (8020320).

Almost surely, 2^222131376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222131376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320812800).

222131376 is an abundant number, since it is smaller than the sum of its proper divisors (419494224).

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

222131376 is a wasteful number, since it uses less digits than its factorization.

222131376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263 (or 3251 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 222131376 is about 14904.0724635920. The cubic root of 222131376 is about 605.6243137567.

Adding to 222131376 its reverse (673131222), we get a palindrome (895262598).

The spelling of 222131376 in words is "two hundred twenty-two million, one hundred thirty-one thousand, three hundred seventy-six".