20112011212 has 12 divisors (see below), whose sum is σ = 36409675680. Its totient is φ = 9709246736.

The previous prime is 20112011203. The next prime is 20112011263. The reversal of 20112011212 is 21211021102.

It is a super-2 number, since 2×20112011212² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20112011192 and 20112011201.

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, 86689588 + ... + 86689819.

It is an arithmetic number, because the mean of its divisors is an integer number (3034139640).

Almost surely, 2^20112011212 is an apocalyptic number.

It is an amenable number.

20112011212 is a deficient number, since it is larger than the sum of its proper divisors (16297664468).

20112011212 is a wasteful number, since it uses less digits than its factorization.

20112011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173379440 (or 173379438 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20112011212 its reverse (21211021102), we get a palindrome (41323032314).

The spelling of 20112011212 in words is "twenty billion, one hundred twelve million, eleven thousand, two hundred twelve".