1131044312021 has 8 divisors (see below), whose sum is σ = 1226810655840. Its totient is φ = 1036529816112.

The previous prime is 1131044312017. The next prime is 1131044312051. The reversal of 1131044312021 is 1202134401311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131044312021 - 2² = 1131044312017 is a prime.

It is a super-2 number, since 2×1131044312021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131044312051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312960095 + ... + 312963708.

It is an arithmetic number, because the mean of its divisors is an integer number (153351331980).

Almost surely, 2^{1131044312021} is an apocalyptic number.

It is an amenable number.

1131044312021 is a deficient number, since it is larger than the sum of its proper divisors (95766343819).

1131044312021 is a wasteful number, since it uses less digits than its factorization.

1131044312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625923955.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1131044312021 its reverse (1202134401311), we get a palindrome (2333178713332).

The spelling of 1131044312021 in words is "one trillion, one hundred thirty-one billion, forty-four million, three hundred twelve thousand, twenty-one".