11222231031 has 72 divisors (see below), whose sum is σ = 18623404800. Its totient is φ = 6500561760.

The previous prime is 11222231023. The next prime is 11222231057. The reversal of 11222231031 is 13013222211.

It is not a de Polignac number, because 11222231031 - 2³ = 11222231023 is a prime.

It is a super-2 number, since 2×11222231031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11222230995 and 11222231013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222231021) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2198320 + ... + 2203418.

It is an arithmetic number, because the mean of its divisors is an integer number (258658400).

Almost surely, 2^11222231031 is an apocalyptic number.

11222231031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11222231031 is a deficient number, since it is larger than the sum of its proper divisors (7401173769).

11222231031 is a wasteful number, since it uses less digits than its factorization.

11222231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217 (or 5203 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11222231031 its reverse (13013222211), we get a palindrome (24235453242).

The spelling of 11222231031 in words is "eleven billion, two hundred twenty-two million, two hundred thirty-one thousand, thirty-one".