221202099 has 6 divisors (see below), whose sum is σ = 319514156. Its totient is φ = 147468060.

The previous prime is 221202077. The next prime is 221202119. The reversal of 221202099 is 990202122.

It is not a de Polignac number, because 221202099 - 2⁹ = 221201587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221202029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12288997 + ... + 12289014.

Almost surely, 2^221202099 is an apocalyptic number.

221202099 is a deficient number, since it is larger than the sum of its proper divisors (98312057).

221202099 is a wasteful number, since it uses less digits than its factorization.

221202099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24578017 (or 24578014 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 221202099 is about 14872.8645189822. The cubic root of 221202099 is about 604.7785989504.

The spelling of 221202099 in words is "two hundred twenty-one million, two hundred two thousand, ninety-nine".