222155312 has 40 divisors (see below), whose sum is σ = 446556240. Its totient is φ = 106937600.

The previous prime is 222155293. The next prime is 222155327. The reversal of 222155312 is 213551222.

222155312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316562 + ... + 317262.

It is an arithmetic number, because the mean of its divisors is an integer number (11163906).

Almost surely, 2^222155312 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 222155312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223278120).

222155312 is an abundant number, since it is smaller than the sum of its proper divisors (224400928).

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

222155312 is a wasteful number, since it uses less digits than its factorization.

222155312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421 (or 1415 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 222155312 is about 14904.8754439613. The cubic root of 222155312 is about 605.6460662036.

The spelling of 222155312 in words is "two hundred twenty-two million, one hundred fifty-five thousand, three hundred twelve".