2021229567493 has 2 divisors, whose sum is σ = 2021229567494. Its totient is φ = 2021229567492.

The previous prime is 2021229567457. The next prime is 2021229567527. The reversal of 2021229567493 is 3947659221202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1966857587809 + 54371979684 = 1402447^2 + 233178^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021229567493 - 2³³ = 2012639632901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021229567493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021229567593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010614783746 + 1010614783747.

It is an arithmetic number, because the mean of its divisors is an integer number (1010614783747).

Almost surely, 2^{2021229567493} is an apocalyptic number.

It is an amenable number.

2021229567493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021229567493 is an equidigital number, since it uses as much as digits as its factorization.

2021229567493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 2021229567493 in words is "two trillion, twenty-one billion, two hundred twenty-nine million, five hundred sixty-seven thousand, four hundred ninety-three".