20111111202212 has 12 divisors (see below), whose sum is σ = 36329749268736. Its totient is φ = 9731182839720.

The previous prime is 20111111202209. The next prime is 20111111202251. The reversal of 20111111202212 is 21220211111102.

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, 81093190208 + ... + 81093190455.

It is an arithmetic number, because the mean of its divisors is an integer number (3027479105728).

Almost surely, 2^{20111111202212} is an apocalyptic number.

It is an amenable number.

20111111202212 is a deficient number, since it is larger than the sum of its proper divisors (16218638066524).

20111111202212 is a wasteful number, since it uses less digits than its factorization.

20111111202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162186380698 (or 162186380696 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20111111202212 its reverse (21220211111102), we get a palindrome (41331322313314).

The spelling of 20111111202212 in words is "twenty trillion, one hundred eleven billion, one hundred eleven million, two hundred two thousand, two hundred twelve".