2111012212212 has 72 divisors (see below), whose sum is σ = 5389490826720. Its totient is φ = 696640651200.

The previous prime is 2111012212207. The next prime is 2111012212213. The reversal of 2111012212212 is 2122122101112.

2111012212212 is a `hidden beast` number, since 211 + 10 + 1 + 221 + 221 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111012212213) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 57441339 + ... + 57478077.

It is an arithmetic number, because the mean of its divisors is an integer number (74854039260).

Almost surely, 2^{2111012212212} is an apocalyptic number.

It is an amenable number.

2111012212212 is an abundant number, since it is smaller than the sum of its proper divisors (3278478614508).

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

2111012212212 is a wasteful number, since it uses less digits than its factorization.

2111012212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52653 (or 52648 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2111012212212 its reverse (2122122101112), we get a palindrome (4233134313324).

The spelling of 2111012212212 in words is "two trillion, one hundred eleven billion, twelve million, two hundred twelve thousand, two hundred twelve".