11122133331 has 48 divisors (see below), whose sum is σ = 15676104704. Its totient is φ = 7012873728.

The previous prime is 11122133327. The next prime is 11122133333. The reversal of 11122133331 is 13333122111.

It is a happy number.

It is not a de Polignac number, because 11122133331 - 2² = 11122133327 is a prime.

It is a super-2 number, since 2×11122133331² (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 = 11122133298 and 11122133307.

It is not an unprimeable number, because it can be changed into a prime (11122133333) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33003195 + ... + 33003531.

Almost surely, 2^11122133331 is an apocalyptic number.

11122133331 is a deficient number, since it is larger than the sum of its proper divisors (4553971373).

11122133331 is a wasteful number, since it uses less digits than its factorization.

11122133331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 599 counting only the distinct ones).

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

Adding to 11122133331 its reverse (13333122111), we get a palindrome (24455255442).

It can be divided in two parts, 11122 and 133331, that added together give a triangular number (144453 = T₅₃₇).

The spelling of 11122133331 in words is "eleven billion, one hundred twenty-two million, one hundred thirty-three thousand, three hundred thirty-one".