1011323230021 has 16 divisors (see below), whose sum is σ = 1104185972736. Its totient is φ = 920616610176.

The previous prime is 1011323230003. The next prime is 1011323230033. The reversal of 1011323230021 is 1200323231101.

It is a cyclic number.

It is not a de Polignac number, because 1011323230021 - 2¹⁹ = 1011322705733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011323230061) 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, 7355916 + ... + 7492138.

It is an arithmetic number, because the mean of its divisors is an integer number (69011623296).

Almost surely, 2^{1011323230021} is an apocalyptic number.

It is an amenable number.

1011323230021 is a deficient number, since it is larger than the sum of its proper divisors (92862742715).

1011323230021 is a wasteful number, since it uses less digits than its factorization.

1011323230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144132.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1011323230021 its reverse (1200323231101), we get a palindrome (2211646461122).

The spelling of 1011323230021 in words is "one trillion, eleven billion, three hundred twenty-three million, two hundred thirty thousand, twenty-one".