2022202111981 has 2 divisors, whose sum is σ = 2022202111982. Its totient is φ = 2022202111980.

The previous prime is 2022202111967. The next prime is 2022202112039. The reversal of 2022202111981 is 1891112022202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1948092939081 + 74109172900 = 1395741^2 + 272230^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022202111981 - 2²¹ = 2022200014829 is a prime.

It is a super-2 number, since 2×2022202111981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2022202111931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011101055990 + 1011101055991.

It is an arithmetic number, because the mean of its divisors is an integer number (1011101055991).

Almost surely, 2^{2022202111981} is an apocalyptic number.

It is an amenable number.

2022202111981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2022202111981 is an equidigital number, since it uses as much as digits as its factorization.

2022202111981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 2022202111981 in words is "two trillion, twenty-two billion, two hundred two million, one hundred eleven thousand, nine hundred eighty-one".