221201202001109 has 4 divisors (see below), whose sum is σ = 241310402183040. Its totient is φ = 201092001819180.

The previous prime is 221201202001097. The next prime is 221201202001111. The reversal of 221201202001109 is 901100202102122.

221201202001109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-221201202001109 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 (221201202001159) 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, 10054600090949 + ... + 10054600090970.

It is an arithmetic number, because the mean of its divisors is an integer number (60327600545760).

Almost surely, 2^{221201202001109} is an apocalyptic number.

It is an amenable number.

221201202001109 is a deficient number, since it is larger than the sum of its proper divisors (20109200181931).

221201202001109 is a wasteful number, since it uses less digits than its factorization.

221201202001109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20109200181930.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 221201202001109 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred two million, one thousand, one hundred nine".