11520213212 has 6 divisors (see below), whose sum is σ = 20160373128. Its totient is φ = 5760106604.

The previous prime is 11520213163. The next prime is 11520213277. The reversal of 11520213212 is 21231202511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1440026648 + ... + 1440026655.

It is an arithmetic number, because the mean of its divisors is an integer number (3360062188).

Almost surely, 2^11520213212 is an apocalyptic number.

It is an amenable number.

11520213212 is a deficient number, since it is larger than the sum of its proper divisors (8640159916).

11520213212 is a wasteful number, since it uses less digits than its factorization.

11520213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880053307 (or 2880053305 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 11520213212 its reverse (21231202511), we get a palindrome (32751415723).

The spelling of 11520213212 in words is "eleven billion, five hundred twenty million, two hundred thirteen thousand, two hundred twelve".