20001012122000 has 160 divisors (see below), whose sum is σ = 59523012616704. Its totient is φ = 6329990592000.

The previous prime is 20001012121999. The next prime is 20001012122011. The reversal of 20001012122000 is 22121010002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54765836 + ... + 55129835.

Almost surely, 2^{20001012122000} is an apocalyptic number.

20001012122000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001012122000 is an abundant number, since it is smaller than the sum of its proper divisors (39522000494704).

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

20001012122000 is a wasteful number, since it uses less digits than its factorization.

20001012122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109895714 (or 109895698 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20001012122000 its reverse (22121010002), we get a palindrome (20023133132002).

The spelling of 20001012122000 in words is "twenty trillion, one billion, twelve million, one hundred twenty-two thousand".