2021200021323 has 42 divisors (see below), whose sum is σ = 3525175240164. Its totient is φ = 1154971420344.

The previous prime is 2021200021307. The next prime is 2021200021339. The reversal of 2021200021323 is 3231200021202.

2021200021323 is a `hidden beast` number, since 202 + 120 + 0 + 0 + 21 + 323 = 666.

It is an interprime number because it is at equal distance from previous prime (2021200021307) and next prime (2021200021339).

It is not a de Polignac number, because 2021200021323 - 2⁴ = 2021200021307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021200021296 and 2021200021305.

It is not an unprimeable number, because it can be changed into a prime (2021200021343) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 28255761 + ... + 28327202.

Almost surely, 2^{2021200021323} is an apocalyptic number.

2021200021323 is a deficient number, since it is larger than the sum of its proper divisors (1503975218841).

2021200021323 is an frugal number, since it uses more digits than its factorization.

2021200021323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56582995 (or 56582973 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 2021200021323 its reverse (3231200021202), we get a palindrome (5252400042525).

The spelling of 2021200021323 in words is "two trillion, twenty-one billion, two hundred million, twenty-one thousand, three hundred twenty-three".