4022223001981 has 2 divisors, whose sum is σ = 4022223001982. Its totient is φ = 4022223001980.

The previous prime is 4022223001957. The next prime is 4022223002033. The reversal of 4022223001981 is 1891003222204.

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., 2500380025081 + 1521842976900 = 1581259^2 + 1233630^2 .

It is a cyclic number.

It is not a de Polignac number, because 4022223001981 - 2¹¹ = 4022222999933 is a prime.

It is a super-2 number, since 2×4022223001981² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4022223071981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2011111500990 + 2011111500991.

It is an arithmetic number, because the mean of its divisors is an integer number (2011111500991).

Almost surely, 2^{4022223001981} is an apocalyptic number.

It is an amenable number.

4022223001981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4022223001981 is an equidigital number, since it uses as much as digits as its factorization.

4022223001981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 4022223001981 in words is "four trillion, twenty-two billion, two hundred twenty-three million, one thousand, nine hundred eighty-one".