12210121011200 has 156 divisors (see below), whose sum is σ = 34602749099280. Its totient is φ = 4186326958080.

The previous prime is 12210121011173. The next prime is 12210121011223. The reversal of 12210121011200 is 211012101221.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

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, 7800305 + ... + 9233904.

Almost surely, 2^{12210121011200} is an apocalyptic number.

12210121011200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12210121011200 is an abundant number, since it is smaller than the sum of its proper divisors (22392628088080).

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

12210121011200 is an equidigital number, since it uses as much as digits as its factorization.

12210121011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17034250 (or 17034223 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12210121011200 its reverse (211012101221), we get a palindrome (12421133112421).

The spelling of 12210121011200 in words is "twelve trillion, two hundred ten billion, one hundred twenty-one million, eleven thousand, two hundred".