11133221031 has 12 divisors (see below), whose sum is σ = 16455304008. Its totient is φ = 7249539024.

The previous prime is 11133221023. The next prime is 11133221059. The reversal of 11133221031 is 13012233111.

It is not a de Polignac number, because 11133221031 - 2³ = 11133221023 is a prime.

It is a super-2 number, since 2×11133221031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11133220995 and 11133221013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11133225031) 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, 14383620 + ... + 14384393.

It is an arithmetic number, because the mean of its divisors is an integer number (1371275334).

Almost surely, 2^11133221031 is an apocalyptic number.

11133221031 is a deficient number, since it is larger than the sum of its proper divisors (5322082977).

11133221031 is a wasteful number, since it uses less digits than its factorization.

11133221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28768062 (or 28768059 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11133221031 its reverse (13012233111), we get a palindrome (24145454142).

The spelling of 11133221031 in words is "eleven billion, one hundred thirty-three million, two hundred twenty-one thousand, thirty-one".