202221099 has 6 divisors (see below), whose sum is σ = 292097156. Its totient is φ = 134814060.

The previous prime is 202221079. The next prime is 202221109. The reversal of 202221099 is 990122202.

It is not a de Polignac number, because 202221099 - 2⁵ = 202221067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202221079) 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 5 ways as a sum of consecutive naturals, for example, 11234497 + ... + 11234514.

Almost surely, 2^202221099 is an apocalyptic number.

202221099 is a deficient number, since it is larger than the sum of its proper divisors (89876057).

202221099 is a wasteful number, since it uses less digits than its factorization.

202221099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22469017 (or 22469014 counting only the distinct ones).

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

The square root of 202221099 is about 14220.4465119770. The cubic root of 202221099 is about 586.9604271252.

It can be divided in two parts, 20222 and 1099, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 202221099 in words is "two hundred two million, two hundred twenty-one thousand, ninety-nine".