2022221021081 has 2 divisors, whose sum is σ = 2022221021082. Its totient is φ = 2022221021080.

The previous prime is 2022221021069. The next prime is 2022221021129. The reversal of 2022221021081 is 1801201222202.

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., 2000694262681 + 21526758400 = 1414459^2 + 146720^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022221021081 - 2⁶ = 2022221021017 is a prime.

It is a super-2 number, since 2×2022221021081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2022221021981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011110510540 + 1011110510541.

It is an arithmetic number, because the mean of its divisors is an integer number (1011110510541).

Almost surely, 2^{2022221021081} is an apocalyptic number.

It is an amenable number.

2022221021081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2022221021081 is an equidigital number, since it uses as much as digits as its factorization.

2022221021081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 2022221021081 its reverse (1801201222202), we get a palindrome (3823422243283).

The spelling of 2022221021081 in words is "two trillion, twenty-two billion, two hundred twenty-one million, twenty-one thousand, eighty-one".