222501406 has 16 divisors (see below), whose sum is σ = 353671920. Its totient is φ = 104621440.

The previous prime is 222501403. The next prime is 222501421. The reversal of 222501406 is 604105222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222501403) 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 7 ways as a sum of consecutive naturals, for example, 63960 + ... + 67348.

It is an arithmetic number, because the mean of its divisors is an integer number (22104495).

Almost surely, 2^222501406 is an apocalyptic number.

222501406 is a deficient number, since it is larger than the sum of its proper divisors (131170514).

222501406 is a wasteful number, since it uses less digits than its factorization.

222501406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5339.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 222501406 is about 14916.4810193289. The cubic root of 222501406 is about 605.9604134227.

Adding to 222501406 its reverse (604105222), we get a palindrome (826606628).

The spelling of 222501406 in words is "two hundred twenty-two million, five hundred one thousand, four hundred six".