22292222 has 4 divisors (see below), whose sum is σ = 33438336. Its totient is φ = 11146110.

The previous prime is 22292201. The next prime is 22292239. The reversal of 22292222 is 22229222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22229222 = 2 ⋅11114611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5573054 + ... + 5573057.

It is an arithmetic number, because the mean of its divisors is an integer number (8359584).

Almost surely, 2^22292222 is an apocalyptic number.

22292222 is a deficient number, since it is larger than the sum of its proper divisors (11146114).

22292222 is a wasteful number, since it uses less digits than its factorization.

22292222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11146113.

The product of its digits is 1152, while the sum is 23.

The square root of 22292222 is about 4721.4639678811. The cubic root of 22292222 is about 281.4391128447.

The spelling of 22292222 in words is "twenty-two million, two hundred ninety-two thousand, two hundred twenty-two".