11312223122 has 16 divisors (see below), whose sum is σ = 17006539032. Its totient is φ = 5643390720.

The previous prime is 11312223119. The next prime is 11312223133. The reversal of 11312223122 is 22132221311.

It can be written as a sum of positive squares in 4 ways, for example, as 6325179961 + 4987043161 = 79531^2 + 70619^2 .

It is a super-2 number, since 2×11312223122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11312223094 and 11312223103.

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, 2606138 + ... + 2610474.

Almost surely, 2^11312223122 is an apocalyptic number.

11312223122 is a deficient number, since it is larger than the sum of its proper divisors (5694315910).

11312223122 is a wasteful number, since it uses less digits than its factorization.

11312223122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6973.

The product of its digits is 288, while the sum is 20.

Adding to 11312223122 its reverse (22132221311), we get a palindrome (33444444433).

The spelling of 11312223122 in words is "eleven billion, three hundred twelve million, two hundred twenty-three thousand, one hundred twenty-two".