2022121012721 has 2 divisors, whose sum is σ = 2022121012722. Its totient is φ = 2022121012720.

The previous prime is 2022121012663. The next prime is 2022121012777. The reversal of 2022121012721 is 1272101212202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1746721716496 + 275399296225 = 1321636^2 + 524785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2022121012721 is a prime.

It is not a weakly prime, because it can be changed into another prime (2022121012921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011060506360 + 1011060506361.

It is an arithmetic number, because the mean of its divisors is an integer number (1011060506361).

Almost surely, 2^{2022121012721} is an apocalyptic number.

It is an amenable number.

2022121012721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2022121012721 is an equidigital number, since it uses as much as digits as its factorization.

2022121012721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 2022121012721 its reverse (1272101212202), we get a palindrome (3294222224923).

The spelling of 2022121012721 in words is "two trillion, twenty-two billion, one hundred twenty-one million, twelve thousand, seven hundred twenty-one".