11133231061 has 6 divisors (see below), whose sum is σ = 11411397986. Its totient is φ = 10861687200.

The previous prime is 11133231049. The next prime is 11133231071. The reversal of 11133231061 is 16013233111.

It can be written as a sum of positive squares in 3 ways, for example, as 1175186961 + 9958044100 = 34281^2 + 99790^2 .

It is not a de Polignac number, because 11133231061 - 2¹⁹ = 11132706773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11133231001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3309810 + ... + 3313171.

Almost surely, 2^11133231061 is an apocalyptic number.

It is an amenable number.

11133231061 is a deficient number, since it is larger than the sum of its proper divisors (278166925).

11133231061 is an frugal number, since it uses more digits than its factorization.

11133231061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6623063 (or 6623022 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 11133231061 its reverse (16013233111), we get a palindrome (27146464172).

The spelling of 11133231061 in words is "eleven billion, one hundred thirty-three million, two hundred thirty-one thousand, sixty-one".