20112011201212 has 36 divisors (see below), whose sum is σ = 42354112270680. Its totient is φ = 8322211529184.

The previous prime is 20112011201159. The next prime is 20112011201333. The reversal of 20112011201212 is 21210211021102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1769171938 + ... + 1769183305.

It is an arithmetic number, because the mean of its divisors is an integer number (1176503118630).

Almost surely, 2^{20112011201212} is an apocalyptic number.

It is an amenable number.

20112011201212 is an abundant number, since it is smaller than the sum of its proper divisors (22242101069468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20112011201212 is a wasteful number, since it uses less digits than its factorization.

20112011201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538355290 (or 3538355281 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20112011201212 its reverse (21210211021102), we get a palindrome (41322222222314).

The spelling of 20112011201212 in words is "twenty trillion, one hundred twelve billion, eleven million, two hundred one thousand, two hundred twelve".