11221313331 has 16 divisors (see below), whose sum is σ = 15570374400. Its totient is φ = 7179654048.

The previous prime is 11221313317. The next prime is 11221313353. The reversal of 11221313331 is 13331312211.

It is a happy number.

It is not a de Polignac number, because 11221313331 - 2⁷ = 11221313203 is a prime.

It is a super-2 number, since 2×11221313331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11221313298 and 11221313307.

It is not an unprimeable number, because it can be changed into a prime (11221313231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371641 + ... + 400698.

It is an arithmetic number, because the mean of its divisors is an integer number (973148400).

Almost surely, 2^11221313331 is an apocalyptic number.

11221313331 is a deficient number, since it is larger than the sum of its proper divisors (4349061069).

11221313331 is a wasteful number, since it uses less digits than its factorization.

11221313331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772538.

The product of its digits is 324, while the sum is 21.

Adding to 11221313331 its reverse (13331312211), we get a palindrome (24552625542).

The spelling of 11221313331 in words is "eleven billion, two hundred twenty-one million, three hundred thirteen thousand, three hundred thirty-one".