222050401 has 4 divisors (see below), whose sum is σ = 222311572. Its totient is φ = 221789232.

The previous prime is 222050399. The next prime is 222050407. The reversal of 222050401 is 104050222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104050222 = 2 ⋅52025111.

It can be written as a sum of positive squares in 2 ways, for example, as 14258176 + 207792225 = 3776^2 + 14415^2 .

It is a cyclic number.

It is not a de Polignac number, because 222050401 - 2¹ = 222050399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222050407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129306 + ... + 131011.

It is an arithmetic number, because the mean of its divisors is an integer number (55577893).

Almost surely, 2^222050401 is an apocalyptic number.

It is an amenable number.

222050401 is a deficient number, since it is larger than the sum of its proper divisors (261171).

222050401 is an equidigital number, since it uses as much as digits as its factorization.

222050401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261170.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 222050401 is about 14901.3556765819. The cubic root of 222050401 is about 605.5507140850.

The spelling of 222050401 in words is "two hundred twenty-two million, fifty thousand, four hundred one".