11312240212 has 24 divisors (see below), whose sum is σ = 24364825856. Its totient is φ = 4475171808.

The previous prime is 11312240209. The next prime is 11312240231. The reversal of 11312240212 is 21204221311.

It is a super-2 number, since 2×11312240212² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11312240212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15538428 + ... + 15539155.

Almost surely, 2^11312240212 is an apocalyptic number.

It is an amenable number.

11312240212 is an abundant number, since it is smaller than the sum of its proper divisors (13052585644).

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

11312240212 is a wasteful number, since it uses less digits than its factorization.

11312240212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31077607 (or 31077605 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11312240212 its reverse (21204221311), we get a palindrome (32516461523).

The spelling of 11312240212 in words is "eleven billion, three hundred twelve million, two hundred forty thousand, two hundred twelve".