12222222000 has 80 divisors (see below), whose sum is σ = 39404463072. Its totient is φ = 3259257600.

The previous prime is 12222221969. The next prime is 12222222031. The reversal of 12222222000 is 22222221.

It is an interprime number because it is at equal distance from previous prime (12222221969) and next prime (12222222031).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1012519 + ... + 1024518.

Almost surely, 2^12222222000 is an apocalyptic number.

12222222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222222000 is an abundant number, since it is smaller than the sum of its proper divisors (27182241072).

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

12222222000 is a wasteful number, since it uses less digits than its factorization.

12222222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037063 (or 2037047 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 12222222000 its reverse (22222221), we get a palindrome (12244444221).

It can be divided in two parts, 1222 and 2222000, that added together give a palindrome (2223222).

The spelling of 12222222000 in words is "twelve billion, two hundred twenty-two million, two hundred twenty-two thousand".