11331111212 has 6 divisors (see below), whose sum is σ = 19829444628. Its totient is φ = 5665555604.

The previous prime is 11331111157. The next prime is 11331111223. The reversal of 11331111212 is 21211113311.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1416388898 + ... + 1416388905.

It is an arithmetic number, because the mean of its divisors is an integer number (3304907438).

Almost surely, 2^11331111212 is an apocalyptic number.

It is an amenable number.

11331111212 is a deficient number, since it is larger than the sum of its proper divisors (8498333416).

11331111212 is a wasteful number, since it uses less digits than its factorization.

11331111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832777807 (or 2832777805 counting only the distinct ones).

The product of its digits is 36, while the sum is 17.

Adding to 11331111212 its reverse (21211113311), we get a palindrome (32542224523).

The spelling of 11331111212 in words is "eleven billion, three hundred thirty-one million, one hundred eleven thousand, two hundred twelve".