222005401 has 4 divisors (see below), whose sum is σ = 222849792. Its totient is φ = 221161012.

The previous prime is 222005387. The next prime is 222005467. The reversal of 222005401 is 104500222.

222005401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222005401 - 2²⁷ = 87787673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222005491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421801 + ... + 422326.

It is an arithmetic number, because the mean of its divisors is an integer number (55712448).

Almost surely, 2^222005401 is an apocalyptic number.

It is an amenable number.

222005401 is a deficient number, since it is larger than the sum of its proper divisors (844391).

222005401 is an equidigital number, since it uses as much as digits as its factorization.

222005401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844390.

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

The square root of 222005401 is about 14899.8456703417. The cubic root of 222005401 is about 605.5098050196.

Adding to 222005401 its reverse (104500222), we get a palindrome (326505623).

The spelling of 222005401 in words is "two hundred twenty-two million, five thousand, four hundred one".