221442202 has 8 divisors (see below), whose sum is σ = 343617300. Its totient is φ = 106903104.

The previous prime is 221442191. The next prime is 221442209. The reversal of 221442202 is 202244122.

221442202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 219365721 + 2076481 = 14811^2 + 1441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 221442202.

It is not an unprimeable number, because it can be changed into a prime (221442209) 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, 1908927 + ... + 1909042.

Almost surely, 2^221442202 is an apocalyptic number.

221442202 is a deficient number, since it is larger than the sum of its proper divisors (122175098).

221442202 is a wasteful number, since it uses less digits than its factorization.

221442202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3818000.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 221442202 is about 14880.9341776651. The cubic root of 221442202 is about 604.9973380572.

Adding to 221442202 its reverse (202244122), we get a palindrome (423686324).

The spelling of 221442202 in words is "two hundred twenty-one million, four hundred forty-two thousand, two hundred two".