2022021021257 has 2 divisors, whose sum is σ = 2022021021258. Its totient is φ = 2022021021256.

The previous prime is 2022021021151. The next prime is 2022021021409. The reversal of 2022021021257 is 7521201202202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1930601870521 + 91419150736 = 1389461^2 + 302356^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022021021257 - 2⁸ = 2022021021001 is a prime.

It is not a weakly prime, because it can be changed into another prime (2022021051257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011010510628 + 1011010510629.

It is an arithmetic number, because the mean of its divisors is an integer number (1011010510629).

Almost surely, 2^{2022021021257} is an apocalyptic number.

It is an amenable number.

2022021021257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2022021021257 is an equidigital number, since it uses as much as digits as its factorization.

2022021021257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

Adding to 2022021021257 its reverse (7521201202202), we get a palindrome (9543222223459).

The spelling of 2022021021257 in words is "two trillion, twenty-two billion, twenty-one million, twenty-one thousand, two hundred fifty-seven".