11021223031 has 12 divisors (see below), whose sum is σ = 13806807672. Its totient is φ = 8720088048.

The previous prime is 11021223023. The next prime is 11021223067. The reversal of 11021223031 is 13032212011.

It is not a de Polignac number, because 11021223031 - 2³ = 11021223023 is a prime.

It is a super-2 number, since 2×11021223031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11021222996 and 11021223014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021223071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8650245 + ... + 8651518.

It is an arithmetic number, because the mean of its divisors is an integer number (1150567306).

Almost surely, 2^11021223031 is an apocalyptic number.

11021223031 is a deficient number, since it is larger than the sum of its proper divisors (2785584641).

11021223031 is a wasteful number, since it uses less digits than its factorization.

11021223031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17301790 (or 17301783 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11021223031 its reverse (13032212011), we get a palindrome (24053435042).

The spelling of 11021223031 in words is "eleven billion, twenty-one million, two hundred twenty-three thousand, thirty-one".