20122111121200 has 120 divisors (see below), whose sum is σ = 52740143294256. Its totient is φ = 7316865024000.

The previous prime is 20122111121183. The next prime is 20122111121207. The reversal of 20122111121200 is 212111122102.

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

It is not an unprimeable number, because it can be changed into a prime (20122111121207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152706544 + ... + 152838256.

Almost surely, 2^{20122111121200} is an apocalyptic number.

20122111121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122111121200 is an abundant number, since it is smaller than the sum of its proper divisors (32618032173056).

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

20122111121200 is a wasteful number, since it uses less digits than its factorization.

20122111121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166463 (or 166452 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20122111121200 its reverse (212111122102), we get a palindrome (20334222243302).

The spelling of 20122111121200 in words is "twenty trillion, one hundred twenty-two billion, one hundred eleven million, one hundred twenty-one thousand, two hundred".