22210222019981 has 2 divisors, whose sum is σ = 22210222019982. Its totient is φ = 22210222019980.

The previous prime is 22210222019963. The next prime is 22210222020047. The reversal of 22210222019981 is 18991022201222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19559691497956 + 2650530522025 = 4422634^2 + 1628045^2 .

It is a cyclic number.

It is not a de Polignac number, because 22210222019981 - 2¹⁸ = 22210221757837 is a prime.

It is a super-2 number, since 2×22210222019981² (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 (22210222019941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105111009990 + 11105111009991.

It is an arithmetic number, because the mean of its divisors is an integer number (11105111009991).

Almost surely, 2^{22210222019981} is an apocalyptic number.

It is an amenable number.

22210222019981 is a deficient number, since it is larger than the sum of its proper divisors (1).

22210222019981 is an equidigital number, since it uses as much as digits as its factorization.

22210222019981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 22210222019981 in words is "twenty-two trillion, two hundred ten billion, two hundred twenty-two million, nineteen thousand, nine hundred eighty-one".