1331122132111 has 4 divisors (see below), whose sum is σ = 1331124896800. Its totient is φ = 1331119367424.

The previous prime is 1331122132099. The next prime is 1331122132211. The reversal of 1331122132111 is 1112312211331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331122132111 is a prime.

It is a super-2 number, since 2×1331122132111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331122132211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450951 + ... + 1692808.

It is an arithmetic number, because the mean of its divisors is an integer number (332781224200).

Almost surely, 2^{1331122132111} is an apocalyptic number.

1331122132111 is a deficient number, since it is larger than the sum of its proper divisors (2764689).

1331122132111 is an equidigital number, since it uses as much as digits as its factorization.

1331122132111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764688.

The product of its digits is 216, while the sum is 22.

Adding to 1331122132111 its reverse (1112312211331), we get a palindrome (2443434343442).

The spelling of 1331122132111 in words is "one trillion, three hundred thirty-one billion, one hundred twenty-two million, one hundred thirty-two thousand, one hundred eleven".