20212111504 has 40 divisors (see below), whose sum is σ = 42298638200. Its totient is φ = 9300953088.

The previous prime is 20212111501. The next prime is 20212111531. The reversal of 20212111504 is 40511121202.

It can be written as a sum of positive squares in 4 ways, for example, as 229461904 + 19982649600 = 15148^2 + 141360^2 .

It is not an unprimeable number, because it can be changed into a prime (20212111501) 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, 74079 + ... + 214270.

It is an arithmetic number, because the mean of its divisors is an integer number (1057465955).

Almost surely, 2^20212111504 is an apocalyptic number.

It is an amenable number.

20212111504 is an abundant number, since it is smaller than the sum of its proper divisors (22086526696).

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

20212111504 is a wasteful number, since it uses less digits than its factorization.

20212111504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288707 (or 288701 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 20212111504 its reverse (40511121202), we get a palindrome (60723232706).

The spelling of 20212111504 in words is "twenty billion, two hundred twelve million, one hundred eleven thousand, five hundred four".