11031223121031 has 4 divisors (see below), whose sum is σ = 14708297494712. Its totient is φ = 7354148747352.

The previous prime is 11031223121027. The next prime is 11031223121033. The reversal of 11031223121031 is 13012132213011.

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

It is not a de Polignac number, because 11031223121031 - 2² = 11031223121027 is a prime.

It is a super-2 number, since 2×11031223121031² (a number of 27 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 = 11031223120989 and 11031223121007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031223121033) 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, 1838537186836 + ... + 1838537186841.

It is an arithmetic number, because the mean of its divisors is an integer number (3677074373678).

Almost surely, 2^{11031223121031} is an apocalyptic number.

11031223121031 is a deficient number, since it is larger than the sum of its proper divisors (3677074373681).

11031223121031 is an equidigital number, since it uses as much as digits as its factorization.

11031223121031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677074373680.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 11031223121031 its reverse (13012132213011), we get a palindrome (24043355334042).

The spelling of 11031223121031 in words is "eleven trillion, thirty-one billion, two hundred twenty-three million, one hundred twenty-one thousand, thirty-one".