20022213209981 has 2 divisors, whose sum is σ = 20022213209982. Its totient is φ = 20022213209980.

The previous prime is 20022213209939. The next prime is 20022213210031. The reversal of 20022213209981 is 18990231222002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12771224479225 + 7250988730756 = 3573685^2 + 2692766^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022213209981 - 2³⁰ = 20021139468157 is a prime.

It is a super-2 number, since 2×20022213209981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20022213206981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011106604990 + 10011106604991.

It is an arithmetic number, because the mean of its divisors is an integer number (10011106604991).

Almost surely, 2^{20022213209981} is an apocalyptic number.

It is an amenable number.

20022213209981 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022213209981 is an equidigital number, since it uses as much as digits as its factorization.

20022213209981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 20022213209981 in words is "twenty trillion, twenty-two billion, two hundred thirteen million, two hundred nine thousand, nine hundred eighty-one".