11220011031 has 4 divisors (see below), whose sum is σ = 14960014712. Its totient is φ = 7480007352.

The previous prime is 11220010993. The next prime is 11220011053. The reversal of 11220011031 is 13011002211.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11220011031 - 2¹¹ = 11220008983 is a prime.

It is a super-2 number, since 2×11220011031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220010998 and 11220011016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220011431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1870001836 + ... + 1870001841.

It is an arithmetic number, because the mean of its divisors is an integer number (3740003678).

Almost surely, 2^11220011031 is an apocalyptic number.

11220011031 is a deficient number, since it is larger than the sum of its proper divisors (3740003681).

11220011031 is an equidigital number, since it uses as much as digits as its factorization.

11220011031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740003680.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 11220011031 its reverse (13011002211), we get a palindrome (24231013242).

The spelling of 11220011031 in words is "eleven billion, two hundred twenty million, eleven thousand, thirty-one".