11331021131 has 2 divisors, whose sum is σ = 11331021132. Its totient is φ = 11331021130.

The previous prime is 11331021077. The next prime is 11331021133. The reversal of 11331021131 is 13112013311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11331021131 - 2²⁶ = 11263912267 is a prime.

It is a super-2 number, since 2×11331021131² (a number of 21 digits) contains 22 as substring.

Together with 11331021133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11331021133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665510565 + 5665510566.

It is an arithmetic number, because the mean of its divisors is an integer number (5665510566).

Almost surely, 2^11331021131 is an apocalyptic number.

11331021131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331021131 is an equidigital number, since it uses as much as digits as its factorization.

11331021131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11331021131 its reverse (13112013311), we get a palindrome (24443034442).

The spelling of 11331021131 in words is "eleven billion, three hundred thirty-one million, twenty-one thousand, one hundred thirty-one".