222842881 has 2 divisors, whose sum is σ = 222842882. Its totient is φ = 222842880.

The previous prime is 222842863. The next prime is 222842903. The reversal of 222842881 is 188248222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155750400 + 67092481 = 12480^2 + 8191^2 .

It is a cyclic number.

It is not a de Polignac number, because 222842881 - 2¹¹ = 222840833 is a prime.

It is a super-2 number, since 2×222842881² = 99317899224760322, 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 222842881.

It is not a weakly prime, because it can be changed into another prime (222842281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111421440 + 111421441.

It is an arithmetic number, because the mean of its divisors is an integer number (111421441).

Almost surely, 2^222842881 is an apocalyptic number.

It is an amenable number.

222842881 is a deficient number, since it is larger than the sum of its proper divisors (1).

222842881 is an equidigital number, since it uses as much as digits as its factorization.

222842881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32768, while the sum is 37.

The square root of 222842881 is about 14927.9228628768. The cubic root of 222842881 is about 606.2702460238.

The spelling of 222842881 in words is "two hundred twenty-two million, eight hundred forty-two thousand, eight hundred eighty-one".