222311099981 has 2 divisors, whose sum is σ = 222311099982. Its totient is φ = 222311099980.

The previous prime is 222311099947. The next prime is 222311100083. The reversal of 222311099981 is 189990113222.

It is a happy number.

222311099981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207836603881 + 14474496100 = 455891^2 + 120310^2 .

It is a cyclic number.

It is not a de Polignac number, because 222311099981 - 2³⁴ = 205131230797 is a prime.

It is a super-2 number, since 2×222311099981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222311099281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111155549990 + 111155549991.

It is an arithmetic number, because the mean of its divisors is an integer number (111155549991).

Almost surely, 2^222311099981 is an apocalyptic number.

It is an amenable number.

222311099981 is a deficient number, since it is larger than the sum of its proper divisors (1).

222311099981 is an equidigital number, since it uses as much as digits as its factorization.

222311099981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 47.

The spelling of 222311099981 in words is "two hundred twenty-two billion, three hundred eleven million, ninety-nine thousand, nine hundred eighty-one".