20122111231200 has 216 divisors, whose sum is σ = 77406103645416. Its totient is φ = 4878087552000.

The previous prime is 20122111231199. The next prime is 20122111231223. The reversal of 20122111231200 is 213211122102.

20122111231200 is a `hidden beast` number, since 2 + 0 + 1 + 221 + 11 + 231 + 200 = 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, 126954331 + ... + 127112730.

It is an arithmetic number, because the mean of its divisors is an integer number (358361590951).

Almost surely, 2^{20122111231200} is an apocalyptic number.

20122111231200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122111231200 is an abundant number, since it is smaller than the sum of its proper divisors (57283992414216).

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

20122111231200 is a wasteful number, since it uses less digits than its factorization.

20122111231200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254067098 (or 254067082 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20122111231200 its reverse (213211122102), we get a palindrome (20335322353302).

The spelling of 20122111231200 in words is "twenty trillion, one hundred twenty-two billion, one hundred eleven million, two hundred thirty-one thousand, two hundred".