2202319981 has 2 divisors, whose sum is σ = 2202319982. Its totient is φ = 2202319980.

The previous prime is 2202319969. The next prime is 2202320023. The reversal of 2202319981 is 1899132022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1883126025 + 319193956 = 43395^2 + 17866^2 .

It is a cyclic number.

It is not a de Polignac number, because 2202319981 - 2³¹ = 54836333 is a prime.

It is a super-2 number, since 2×2202319981² = 9700426597423680722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2202319981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2202319181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1101159990 + 1101159991.

It is an arithmetic number, because the mean of its divisors is an integer number (1101159991).

Almost surely, 2^2202319981 is an apocalyptic number.

It is an amenable number.

2202319981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2202319981 is an equidigital number, since it uses as much as digits as its factorization.

2202319981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 2202319981 is about 46928.8821622676. The cubic root of 2202319981 is about 1301.0484600986.

The spelling of 2202319981 in words is "two billion, two hundred two million, three hundred nineteen thousand, nine hundred eighty-one".