11311221114 has 12 divisors (see below), whose sum is σ = 24507645786. Its totient is φ = 3770407032.

The previous prime is 11311221109. The next prime is 11311221137. The reversal of 11311221114 is 41112211311.

It can be written as a sum of positive squares in only one way, i.e., 10339839225 + 971381889 = 101685^2 + 31167^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 628401173 = 11311221114 / (1 + 1 + 3 + 1 + 1 + 2 + 2 + 1 + 1 + 1 + 4).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 314200569 + ... + 314200604.

Almost surely, 2^11311221114 is an apocalyptic number.

11311221114 is an abundant number, since it is smaller than the sum of its proper divisors (13196424672).

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

11311221114 is a wasteful number, since it uses less digits than its factorization.

11311221114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628401181 (or 628401178 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

Adding to 11311221114 its reverse (41112211311), we get a palindrome (52423432425).

The spelling of 11311221114 in words is "eleven billion, three hundred eleven million, two hundred twenty-one thousand, one hundred fourteen".