222940901 has 2 divisors, whose sum is σ = 222940902. Its totient is φ = 222940900.

The previous prime is 222940867. The next prime is 222940919. The reversal of 222940901 is 109049222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211557025 + 11383876 = 14545^2 + 3374^2 .

It is a cyclic number.

It is not a de Polignac number, because 222940901 - 2¹⁴ = 222924517 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222940931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111470450 + 111470451.

It is an arithmetic number, because the mean of its divisors is an integer number (111470451).

Almost surely, 2^222940901 is an apocalyptic number.

It is an amenable number.

222940901 is a deficient number, since it is larger than the sum of its proper divisors (1).

222940901 is an equidigital number, since it uses as much as digits as its factorization.

222940901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 222940901 is about 14931.2056110684. The cubic root of 222940901 is about 606.3591246368.

The spelling of 222940901 in words is "two hundred twenty-two million, nine hundred forty thousand, nine hundred one".