222221402 has 16 divisors (see below), whose sum is σ = 360683232. Its totient is φ = 102075120.

The previous prime is 222221401. The next prime is 222221429. The reversal of 222221402 is 204122222.

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 7 ways as a sum of consecutive naturals, for example, 14768 + ... + 25739.

It is an arithmetic number, because the mean of its divisors is an integer number (22542702).

Almost surely, 2^222221402 is an apocalyptic number.

222221402 is a deficient number, since it is larger than the sum of its proper divisors (138461830).

222221402 is a wasteful number, since it uses less digits than its factorization.

222221402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40733.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 222221402 is about 14907.0923388835. The cubic root of 222221402 is about 605.7061190551.

Adding to 222221402 its reverse (204122222), we get a palindrome (426343624).

The spelling of 222221402 in words is "two hundred twenty-two million, two hundred twenty-one thousand, four hundred two".