222220401 has 16 divisors (see below), whose sum is σ = 319374720. Its totient is φ = 136627200.

The previous prime is 222220357. The next prime is 222220429. The reversal of 222220401 is 104022222.

It is not a de Polignac number, because 222220401 - 2¹³ = 222212209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222221401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60660 + ... + 64218.

It is an arithmetic number, because the mean of its divisors is an integer number (19960920).

Almost surely, 2^222220401 is an apocalyptic number.

It is an amenable number.

222220401 is a deficient number, since it is larger than the sum of its proper divisors (97154319).

222220401 is a wasteful number, since it uses less digits than its factorization.

222220401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5176.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 222220401 is about 14907.0587642231. The cubic root of 222220401 is about 605.7052095827.

Adding to 222220401 its reverse (104022222), we get a palindrome (326242623).

The spelling of 222220401 in words is "two hundred twenty-two million, two hundred twenty thousand, four hundred one".