20012211012 has 24 divisors (see below), whose sum is σ = 46836241312. Its totient is φ = 6650582400.

The previous prime is 20012211007. The next prime is 20012211019. The reversal of 20012211012 is 21011221002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20012211019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2515189 + ... + 2523132.

Almost surely, 2^20012211012 is an apocalyptic number.

It is an amenable number.

20012211012 is an abundant number, since it is smaller than the sum of its proper divisors (26824030300).

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

20012211012 is a wasteful number, since it uses less digits than its factorization.

20012211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5038659 (or 5038657 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20012211012 its reverse (21011221002), we get a palindrome (41023432014).

The spelling of 20012211012 in words is "twenty billion, twelve million, two hundred eleven thousand, twelve".