221040202 has 4 divisors (see below), whose sum is σ = 331560306. Its totient is φ = 110520100.

The previous prime is 221040187. The next prime is 221040229. The reversal of 221040202 is 202040122.

221040202 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.

It can be written as a sum of positive squares in only one way, i.e., 211731601 + 9308601 = 14551^2 + 3051^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55260049 + ... + 55260052.

Almost surely, 2^221040202 is an apocalyptic number.

221040202 is a deficient number, since it is larger than the sum of its proper divisors (110520104).

221040202 is a wasteful number, since it uses less digits than its factorization.

221040202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110520103.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 221040202 is about 14867.4208254156. The cubic root of 221040202 is about 604.6310178649.

Adding to 221040202 its reverse (202040122), we get a palindrome (423080324).

The spelling of 221040202 in words is "two hundred twenty-one million, forty thousand, two hundred two".