222211019981 has 2 divisors, whose sum is σ = 222211019982. Its totient is φ = 222211019980.

The previous prime is 222211019969. The next prime is 222211020049. The reversal of 222211019981 is 189910112222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206964944356 + 15246075625 = 454934^2 + 123475^2 .

It is a cyclic number.

It is not a de Polignac number, because 222211019981 - 2²² = 222206825677 is a prime.

It is a super-3 number, since 3×222211019981³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222211019881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111105509990 + 111105509991.

It is an arithmetic number, because the mean of its divisors is an integer number (111105509991).

Almost surely, 2^222211019981 is an apocalyptic number.

It is an amenable number.

222211019981 is a deficient number, since it is larger than the sum of its proper divisors (1).

222211019981 is an equidigital number, since it uses as much as digits as its factorization.

222211019981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 38.

The spelling of 222211019981 in words is "two hundred twenty-two billion, two hundred eleven million, nineteen thousand, nine hundred eighty-one".