221202002109 has 32 divisors (see below), whose sum is σ = 340726901760. Its totient is φ = 126156512000.

The previous prime is 221202002081. The next prime is 221202002111. The reversal of 221202002109 is 901200202122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221202002109 - 2¹⁶ = 221201936573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202002159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4153552 + ... + 4206470.

It is an arithmetic number, because the mean of its divisors is an integer number (10647715680).

Almost surely, 2^221202002109 is an apocalyptic number.

It is an amenable number.

221202002109 is a deficient number, since it is larger than the sum of its proper divisors (119524899651).

221202002109 is a wasteful number, since it uses less digits than its factorization.

221202002109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60401.

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 221202002109 in words is "two hundred twenty-one billion, two hundred two million, two thousand, one hundred nine".