20210511012 has 24 divisors (see below), whose sum is σ = 48254554656. Its totient is φ = 6580166208.

The previous prime is 20210511011. The next prime is 20210511019. The reversal of 20210511012 is 21011501202.

It is a junction number, because it is equal to n+sod(n) for n = 20210510982 and 20210511000.

It is not an unprimeable number, because it can be changed into a prime (20210511011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19583313 + ... + 19584344.

It is an arithmetic number, because the mean of its divisors is an integer number (2010606444).

Almost surely, 2^20210511012 is an apocalyptic number.

It is an amenable number.

20210511012 is an abundant number, since it is smaller than the sum of its proper divisors (28044043644).

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

20210511012 is a wasteful number, since it uses less digits than its factorization.

20210511012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39167707 (or 39167705 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The spelling of 20210511012 in words is "twenty billion, two hundred ten million, five hundred eleven thousand, twelve".