202201221112109 has 4 divisors (see below), whose sum is σ = 202847231403516. Its totient is φ = 201555210820704.

The previous prime is 202201221112091. The next prime is 202201221112193. The reversal of 202201221112109 is 901211122102202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 495611776009 + 201705609336100 = 703997^2 + 14202310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202201221112109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201221132109) 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, 323005145234 + ... + 323005145859.

It is an arithmetic number, because the mean of its divisors is an integer number (50711807850879).

Almost surely, 2^{202201221112109} is an apocalyptic number.

It is an amenable number.

202201221112109 is a deficient number, since it is larger than the sum of its proper divisors (646010291407).

202201221112109 is an equidigital number, since it uses as much as digits as its factorization.

202201221112109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646010291406.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 202201221112109 in words is "two hundred two trillion, two hundred one billion, two hundred twenty-one million, one hundred twelve thousand, one hundred nine".