12212321200 has 60 divisors (see below), whose sum is σ = 29693677608. Its totient is φ = 4826060800.

The previous prime is 12212321197. The next prime is 12212321221. The reversal of 12212321200 is 212321221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150721 + ... + 217120.

Almost surely, 2^12212321200 is an apocalyptic number.

12212321200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212321200 is an abundant number, since it is smaller than the sum of its proper divisors (17481356408).

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

12212321200 is a wasteful number, since it uses less digits than its factorization.

12212321200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367942 (or 367931 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12212321200 its reverse (212321221), we get a palindrome (12424642421).

The spelling of 12212321200 in words is "twelve billion, two hundred twelve million, three hundred twenty-one thousand, two hundred".