20012010012 has 60 divisors (see below), whose sum is σ = 52342160640. Its totient is φ = 6667251264.

The previous prime is 20012009959. The next prime is 20012010023. The reversal of 20012010012 is 21001021002.

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 = 20012009976 and 20012010003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 662053 + ... + 691619.

It is an arithmetic number, because the mean of its divisors is an integer number (872369344).

Almost surely, 2^20012010012 is an apocalyptic number.

It is an amenable number.

20012010012 is an abundant number, since it is smaller than the sum of its proper divisors (32330150628).

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

20012010012 is a wasteful number, since it uses less digits than its factorization.

20012010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31672 (or 31661 counting only the distinct ones).

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

Adding to 20012010012 its reverse (21001021002), we get a palindrome (41013031014).

The spelling of 20012010012 in words is "twenty billion, twelve million, ten thousand, twelve".