1222109998 has 8 divisors (see below), whose sum is σ = 1833320808. Its totient is φ = 611003064.

The previous prime is 1222109989. The next prime is 1222110017. The reversal of 1222109998 is 8999012221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19065 + ... + 52987.

It is an arithmetic number, because the mean of its divisors is an integer number (229165101).

Almost surely, 2^1222109998 is an apocalyptic number.

1222109998 is a deficient number, since it is larger than the sum of its proper divisors (611210810).

1222109998 is a wasteful number, since it uses less digits than its factorization.

1222109998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51938.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 1222109998 is about 34958.6898781977. The cubic root of 1222109998 is about 1069.1453850838.

The spelling of 1222109998 in words is "one billion, two hundred twenty-two million, one hundred nine thousand, nine hundred ninety-eight".