12021122122200 has 144 divisors (see below), whose sum is σ = 40450252424400. Its totient is φ = 3199334419200.

The previous prime is 12021122122187. The next prime is 12021122122249. The reversal of 12021122122200 is 222122112021.

It is a happy number.

12021122122200 is a `hidden beast` number, since 1 + 20 + 211 + 2 + 212 + 220 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5644116 + ... + 7476515.

It is an arithmetic number, because the mean of its divisors is an integer number (280904530725).

Almost surely, 2^{12021122122200} is an apocalyptic number.

12021122122200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021122122200 is an abundant number, since it is smaller than the sum of its proper divisors (28429130302200).

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

12021122122200 is a wasteful number, since it uses less digits than its factorization.

12021122122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13121162 (or 13121150 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12021122122200 its reverse (222122112021), we get a palindrome (12243244234221).

The spelling of 12021122122200 in words is "twelve trillion, twenty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred".