1131323030021 has 16 divisors (see below), whose sum is σ = 1222561579008. Its totient is φ = 1043816122800.

The previous prime is 1131323030009. The next prime is 1131323030023. The reversal of 1131323030021 is 1200303231311.

It is a cyclic number.

It is not a de Polignac number, because 1131323030021 - 2¹⁸ = 1131322767877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131323029975 and 1131323030002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131323030023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2365325 + ... + 2803106.

It is an arithmetic number, because the mean of its divisors is an integer number (76410098688).

Almost surely, 2^{1131323030021} is an apocalyptic number.

It is an amenable number.

1131323030021 is a deficient number, since it is larger than the sum of its proper divisors (91238548987).

1131323030021 is a wasteful number, since it uses less digits than its factorization.

1131323030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168792.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1131323030021 its reverse (1200303231311), we get a palindrome (2331626261332).

The spelling of 1131323030021 in words is "one trillion, one hundred thirty-one billion, three hundred twenty-three million, thirty thousand, twenty-one".