20052113212 has 24 divisors (see below), whose sum is σ = 36127778400. Its totient is φ = 9732349440.

The previous prime is 20052113203. The next prime is 20052113231. The reversal of 20052113212 is 21231125002.

It is a self number, because there is not a number n which added to its sum of digits gives 20052113212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274573 + ... + 339844.

It is an arithmetic number, because the mean of its divisors is an integer number (1505324100).

Almost surely, 2^20052113212 is an apocalyptic number.

It is an amenable number.

20052113212 is a deficient number, since it is larger than the sum of its proper divisors (16075665188).

20052113212 is a wasteful number, since it uses less digits than its factorization.

20052113212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614661 (or 614659 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 20052113212 its reverse (21231125002), we get a palindrome (41283238214).

The spelling of 20052113212 in words is "twenty billion, fifty-two million, one hundred thirteen thousand, two hundred twelve".