2311322002021 has 4 divisors (see below), whose sum is σ = 2322276134944. Its totient is φ = 2300367869100.

The previous prime is 2311322001959. The next prime is 2311322002063. The reversal of 2311322002021 is 1202002231132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2311322002021 - 2³⁷ = 2173883048549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2311322002021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311322002321) 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, 5477066145 + ... + 5477066566.

It is an arithmetic number, because the mean of its divisors is an integer number (580569033736).

Almost surely, 2^{2311322002021} is an apocalyptic number.

It is an amenable number.

2311322002021 is a deficient number, since it is larger than the sum of its proper divisors (10954132923).

2311322002021 is a wasteful number, since it uses less digits than its factorization.

2311322002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10954132922.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2311322002021 its reverse (1202002231132), we get a palindrome (3513324233153).

The spelling of 2311322002021 in words is "two trillion, three hundred eleven billion, three hundred twenty-two million, two thousand, twenty-one".