11331121261331 has 2 divisors, whose sum is σ = 11331121261332. Its totient is φ = 11331121261330.

The previous prime is 11331121261303. The next prime is 11331121261391. The reversal of 11331121261331 is 13316212113311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11331121261331 - 2⁶ = 11331121261267 is a prime.

It is a super-2 number, since 2×11331121261331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11331121261294 and 11331121261303.

It is not a weakly prime, because it can be changed into another prime (11331121261301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665560630665 + 5665560630666.

It is an arithmetic number, because the mean of its divisors is an integer number (5665560630666).

Almost surely, 2^{11331121261331} is an apocalyptic number.

11331121261331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331121261331 is an equidigital number, since it uses as much as digits as its factorization.

11331121261331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 29.

Adding to 11331121261331 its reverse (13316212113311), we get a palindrome (24647333374642).

The spelling of 11331121261331 in words is "eleven trillion, three hundred thirty-one billion, one hundred twenty-one million, two hundred sixty-one thousand, three hundred thirty-one".