11121311212 has 24 divisors (see below), whose sum is σ = 21234693312. Its totient is φ = 5054403600.

The previous prime is 11121311207. The next prime is 11121311231. The reversal of 11121311212 is 21211312111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386103 + ... + 413905.

It is an arithmetic number, because the mean of its divisors is an integer number (884778888).

Almost surely, 2^11121311212 is an apocalyptic number.

It is an amenable number.

11121311212 is a deficient number, since it is larger than the sum of its proper divisors (10113382100).

11121311212 is a wasteful number, since it uses less digits than its factorization.

11121311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36909 (or 36907 counting only the distinct ones).

The product of its digits is 24, while the sum is 16.

Adding to 11121311212 its reverse (21211312111), we get a palindrome (32332623323).

The spelling of 11121311212 in words is "eleven billion, one hundred twenty-one million, three hundred eleven thousand, two hundred twelve".