20200020012 has 144 divisors (see below), whose sum is σ = 54835580800. Its totient is φ = 6250970880.

The previous prime is 20200019971. The next prime is 20200020023. The reversal of 20200020012 is 21002000202.

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 = 20200019976 and 20200020003.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9668664 + ... + 9670752.

Almost surely, 2^20200020012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20200020012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27417790400).

20200020012 is an abundant number, since it is smaller than the sum of its proper divisors (34635560788).

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

20200020012 is a wasteful number, since it uses less digits than its factorization.

20200020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396 (or 2391 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20200020012 its reverse (21002000202), we get a palindrome (41202020214).

The spelling of 20200020012 in words is "twenty billion, two hundred million, twenty thousand, twelve".