12222998 has 4 divisors (see below), whose sum is σ = 18334500. Its totient is φ = 6111498.

The previous prime is 12222989. The next prime is 12223009. The reversal of 12222998 is 89922221.

It is a semiprime because it is the product of two primes.

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, 3055748 + ... + 3055751.

It is an arithmetic number, because the mean of its divisors is an integer number (4583625).

Almost surely, 2^12222998 is an apocalyptic number.

12222998 is a deficient number, since it is larger than the sum of its proper divisors (6111502).

12222998 is an equidigital number, since it uses as much as digits as its factorization.

12222998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111501.

The product of its digits is 10368, while the sum is 35.

The square root of 12222998 is about 3496.1404434033. The cubic root of 12222998 is about 230.3523144907.

The spelling of 12222998 in words is "twelve million, two hundred twenty-two thousand, nine hundred ninety-eight".