1121111331131 has 4 divisors (see below), whose sum is σ = 1223030543064. Its totient is φ = 1019192119200.

The previous prime is 1121111331079. The next prime is 1121111331133. The reversal of 1121111331131 is 1311331111211.

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-1121111331131 is a prime.

It is a super-2 number, since 2×1121111331131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121111331133) 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, 50959605950 + ... + 50959605971.

It is an arithmetic number, because the mean of its divisors is an integer number (305757635766).

Almost surely, 2^{1121111331131} is an apocalyptic number.

1121111331131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1121111331131 is a deficient number, since it is larger than the sum of its proper divisors (101919211933).

1121111331131 is a wasteful number, since it uses less digits than its factorization.

1121111331131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101919211932.

The product of its digits is 54, while the sum is 20.

Adding to 1121111331131 its reverse (1311331111211), we get a palindrome (2432442442342).

The spelling of 1121111331131 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, three hundred thirty-one thousand, one hundred thirty-one".