20111020202212 has 24 divisors (see below), whose sum is σ = 35389863384512. Its totient is φ = 9999634226400.

The previous prime is 20111020202209. The next prime is 20111020202237. The reversal of 20111020202212 is 21220202011102.

It is a happy 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, 23007553 + ... + 23865655.

Almost surely, 2^{20111020202212} is an apocalyptic number.

It is an amenable number.

20111020202212 is a deficient number, since it is larger than the sum of its proper divisors (15278843182300).

20111020202212 is a wasteful number, since it uses less digits than its factorization.

20111020202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890659 (or 890657 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20111020202212 its reverse (21220202011102), we get a palindrome (41331222213314).

The spelling of 20111020202212 in words is "twenty trillion, one hundred eleven billion, twenty million, two hundred two thousand, two hundred twelve".