20203111012 has 36 divisors (see below), whose sum is σ = 41168451324. Its totient is φ = 8649910080.

The previous prime is 20203110997. The next prime is 20203111031. The reversal of 20203111012 is 21011130202.

It can be written as a sum of positive squares in 2 ways, for example, as 14014771456 + 6188339556 = 118384^2 + 78666^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20203110983 and 20203111001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149638 + ... + 250594.

Almost surely, 2^20203111012 is an apocalyptic number.

It is an amenable number.

20203111012 is an abundant number, since it is smaller than the sum of its proper divisors (20965340312).

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

20203111012 is a wasteful number, since it uses less digits than its factorization.

20203111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101996 (or 101987 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20203111012 its reverse (21011130202), we get a palindrome (41214241214).

The spelling of 20203111012 in words is "twenty billion, two hundred three million, one hundred eleven thousand, twelve".