11611621212 has 12 divisors (see below), whose sum is σ = 27093782856. Its totient is φ = 3870540400.

The previous prime is 11611621121. The next prime is 11611621223. The reversal of 11611621212 is 21212611611.

11611621212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 483817539 + ... + 483817562.

It is an arithmetic number, because the mean of its divisors is an integer number (2257815238).

Almost surely, 2^11611621212 is an apocalyptic number.

11611621212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11611621212 is an abundant number, since it is smaller than the sum of its proper divisors (15482161644).

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

11611621212 is a wasteful number, since it uses less digits than its factorization.

11611621212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967635108 (or 967635106 counting only the distinct ones).

The product of its digits is 288, while the sum is 24.

The spelling of 11611621212 in words is "eleven billion, six hundred eleven million, six hundred twenty-one thousand, two hundred twelve".