222271901 has 2 divisors, whose sum is σ = 222271902. Its totient is φ = 222271900.

The previous prime is 222271871. The next prime is 222271927. The reversal of 222271901 is 109172222.

It is an a-pointer prime, because the next prime (222271927) can be obtained adding 222271901 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193905625 + 28366276 = 13925^2 + 5326^2 .

It is a cyclic number.

It is not a de Polignac number, because 222271901 - 2¹⁸ = 222009757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222273901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111135950 + 111135951.

It is an arithmetic number, because the mean of its divisors is an integer number (111135951).

Almost surely, 2^222271901 is an apocalyptic number.

It is an amenable number.

222271901 is a deficient number, since it is larger than the sum of its proper divisors (1).

222271901 is an equidigital number, since it uses as much as digits as its factorization.

222271901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 222271901 is about 14908.7860337453. The cubic root of 222271901 is about 605.7519970794.

The spelling of 222271901 in words is "two hundred twenty-two million, two hundred seventy-one thousand, nine hundred one".