2021313120023 has 16 divisors (see below), whose sum is σ = 2139712920576. Its totient is φ = 1906437193920.

The previous prime is 2021313119989. The next prime is 2021313120031. The reversal of 2021313120023 is 3200213131202.

It is a cyclic number.

It is not a de Polignac number, because 2021313120023 - 2¹⁰ = 2021313118999 is a prime.

It is a super-2 number, since 2×2021313120023² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021313119977 and 2021313120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021313120623) 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, 1049861 + ... + 2268222.

It is an arithmetic number, because the mean of its divisors is an integer number (133732057536).

Almost surely, 2^{2021313120023} is an apocalyptic number.

2021313120023 is a deficient number, since it is larger than the sum of its proper divisors (118399800553).

2021313120023 is a wasteful number, since it uses less digits than its factorization.

2021313120023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318614.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2021313120023 its reverse (3200213131202), we get a palindrome (5221526251225).

The spelling of 2021313120023 in words is "two trillion, twenty-one billion, three hundred thirteen million, one hundred twenty thousand, twenty-three".