20120010012 has 48 divisors (see below), whose sum is σ = 54430951680. Its totient is φ = 6415074864.

The previous prime is 20120010007. The next prime is 20120010047. The reversal of 20120010012 is 21001002102.

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 = 20120009976 and 20120010003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4047438 + ... + 4052405.

It is an arithmetic number, because the mean of its divisors is an integer number (1133978160).

Almost surely, 2^20120010012 is an apocalyptic number.

It is an amenable number.

20120010012 is an abundant number, since it is smaller than the sum of its proper divisors (34310941668).

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

20120010012 is a wasteful number, since it uses less digits than its factorization.

20120010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8099879 (or 8099871 counting only the distinct ones).

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

Adding to 20120010012 its reverse (21001002102), we get a palindrome (41121012114).

The spelling of 20120010012 in words is "twenty billion, one hundred twenty million, ten thousand, twelve".