2021322473 has 2 divisors, whose sum is σ = 2021322474. Its totient is φ = 2021322472.

The previous prime is 2021322451. The next prime is 2021322493. The reversal of 2021322473 is 3742231202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1088142169 + 933180304 = 32987^2 + 30548^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021322473 - 2²⁶ = 1954213609 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021322403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010661236 + 1010661237.

It is an arithmetic number, because the mean of its divisors is an integer number (1010661237).

Almost surely, 2^2021322473 is an apocalyptic number.

It is an amenable number.

2021322473 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021322473 is an equidigital number, since it uses as much as digits as its factorization.

2021322473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 2021322473 is about 44959.1200203029. The cubic root of 2021322473 is about 1264.3826705572.

Adding to 2021322473 its reverse (3742231202), we get a palindrome (5763553675).

The spelling of 2021322473 in words is "two billion, twenty-one million, three hundred twenty-two thousand, four hundred seventy-three".