20112243212 has 12 divisors (see below), whose sum is σ = 36410095680. Its totient is φ = 9709358736.

The previous prime is 20112243187. The next prime is 20112243233. The reversal of 20112243212 is 21234221102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86690588 + ... + 86690819.

It is an arithmetic number, because the mean of its divisors is an integer number (3034174640).

Almost surely, 2^20112243212 is an apocalyptic number.

It is an amenable number.

20112243212 is a deficient number, since it is larger than the sum of its proper divisors (16297852468).

20112243212 is a wasteful number, since it uses less digits than its factorization.

20112243212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173381440 (or 173381438 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20112243212 its reverse (21234221102), we get a palindrome (41346464314).

The spelling of 20112243212 in words is "twenty billion, one hundred twelve million, two hundred forty-three thousand, two hundred twelve".