222280981 has 16 divisors (see below), whose sum is σ = 253570240. Its totient is φ = 193155840.

The previous prime is 222280979. The next prime is 222280987. The reversal of 222280981 is 189082222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 222280981 - 2¹ = 222280979 is a prime.

It is a super-2 number, since 2×222280981² = 98817669028644722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222280987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37501 + ... + 43021.

It is an arithmetic number, because the mean of its divisors is an integer number (15848140).

Almost surely, 2^222280981 is an apocalyptic number.

It is an amenable number.

222280981 is a deficient number, since it is larger than the sum of its proper divisors (31289259).

222280981 is a wasteful number, since it uses less digits than its factorization.

222280981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5716.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 222280981 is about 14909.0905490576. The cubic root of 222280981 is about 605.7602454653.

The spelling of 222280981 in words is "two hundred twenty-two million, two hundred eighty thousand, nine hundred eighty-one".