20022196985081 has 2 divisors, whose sum is σ = 20022196985082. Its totient is φ = 20022196985080.

The previous prime is 20022196985059. The next prime is 20022196985111. The reversal of 20022196985081 is 18058969122002.

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., 19908408829456 + 113788155625 = 4461884^2 + 337325^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022196985081 - 2¹⁰ = 20022196984057 is a prime.

It is a super-2 number, since 2×20022196985081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20022196984081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011098492540 + 10011098492541.

It is an arithmetic number, because the mean of its divisors is an integer number (10011098492541).

Almost surely, 2^{20022196985081} is an apocalyptic number.

It is an amenable number.

20022196985081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022196985081 is an equidigital number, since it uses as much as digits as its factorization.

20022196985081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 53.

The spelling of 20022196985081 in words is "twenty trillion, twenty-two billion, one hundred ninety-six million, nine hundred eighty-five thousand, eighty-one".