220201111212109 has 4 divisors (see below), whose sum is σ = 223302535313760. Its totient is φ = 217099687110460.

The previous prime is 220201111212101. The next prime is 220201111212119. The reversal of 220201111212109 is 901212111102022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220201111212109 - 2³ = 220201111212101 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 (220201111212101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1550712050719 + ... + 1550712050860.

It is an arithmetic number, because the mean of its divisors is an integer number (55825633828440).

Almost surely, 2^{220201111212109} is an apocalyptic number.

It is an amenable number.

220201111212109 is a deficient number, since it is larger than the sum of its proper divisors (3101424101651).

220201111212109 is an equidigital number, since it uses as much as digits as its factorization.

220201111212109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101424101650.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 220201111212109 in words is "two hundred twenty trillion, two hundred one billion, one hundred eleven million, two hundred twelve thousand, one hundred nine".