222149442 has 16 divisors (see below), whose sum is σ = 444614400. Its totient is φ = 73997232.

The previous prime is 222149437. The next prime is 222149461. The reversal of 222149442 is 244941222.

It is a super-2 number, since 2×222149442² = 98700749161822728, which contains 22 as substring.

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, 3442 + ... + 21357.

It is an arithmetic number, because the mean of its divisors is an integer number (27788400).

Almost surely, 2^222149442 is an apocalyptic number.

222149442 is an abundant number, since it is smaller than the sum of its proper divisors (222464958).

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

222149442 is a wasteful number, since it uses less digits than its factorization.

222149442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26297.

The product of its digits is 9216, while the sum is 30.

The square root of 222149442 is about 14904.6785272276. The cubic root of 222149442 is about 605.6407318369.

The spelling of 222149442 in words is "two hundred twenty-two million, one hundred forty-nine thousand, four hundred forty-two".