20100120000012 has 36 divisors (see below), whose sum is σ = 54716993334640. Its totient is φ = 6184652307552.

The previous prime is 20100119999977. The next prime is 20100120000071. The reversal of 20100120000012 is 21000002100102.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×20100120000012³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20100119999949 and 20100120000003.

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, 21474486712 + ... + 21474487647.

Almost surely, 2^{20100120000012} is an apocalyptic number.

It is an amenable number.

20100120000012 is an abundant number, since it is smaller than the sum of its proper divisors (34616873334628).

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

20100120000012 is a wasteful number, since it uses less digits than its factorization.

20100120000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42948974382 (or 42948974377 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20100120000012 its reverse (21000002100102), we get a palindrome (41100122100114).

The spelling of 20100120000012 in words is "twenty trillion, one hundred billion, one hundred twenty million, twelve", and thus it is an aban number.