12122211000 has 64 divisors (see below), whose sum is σ = 37821307680. Its totient is φ = 3232588800.

The previous prime is 12122210981. The next prime is 12122211037. The reversal of 12122211000 is 11222121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2017369 + ... + 2023368.

Almost surely, 2^12122211000 is an apocalyptic number.

12122211000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122211000 is an abundant number, since it is smaller than the sum of its proper divisors (25699096680).

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

12122211000 is a wasteful number, since it uses less digits than its factorization.

12122211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040761 (or 4040747 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12122211000 its reverse (11222121), we get a palindrome (12133433121).

The spelling of 12122211000 in words is "twelve billion, one hundred twenty-two million, two hundred eleven thousand".