2111155212 has 24 divisors (see below), whose sum is σ = 5030839296. Its totient is φ = 688745488.

The previous prime is 2111155199. The next prime is 2111155229. The reversal of 2111155212 is 2125511112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1871028 + ... + 1872155.

It is an arithmetic number, because the mean of its divisors is an integer number (209618304).

Almost surely, 2^2111155212 is an apocalyptic number.

It is an amenable number.

2111155212 is an abundant number, since it is smaller than the sum of its proper divisors (2919684084).

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

2111155212 is a wasteful number, since it uses less digits than its factorization.

2111155212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743237 (or 3743235 counting only the distinct ones).

The product of its digits is 200, while the sum is 21.

The square root of 2111155212 is about 45947.3090833402. The cubic root of 2111155212 is about 1282.8426431171.

Adding to 2111155212 its reverse (2125511112), we get a palindrome (4236666324).

The spelling of 2111155212 in words is "two billion, one hundred eleven million, one hundred fifty-five thousand, two hundred twelve".