212201011109 has 4 divisors (see below), whose sum is σ = 212202247104. Its totient is φ = 212199775116.

The previous prime is 212201011007. The next prime is 212201011151. The reversal of 212201011109 is 901110102212.

212201011109 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 not a de Polignac number, because 212201011109 - 2³⁶ = 143481534373 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 (212201011159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308957 + ... + 721010.

It is an arithmetic number, because the mean of its divisors is an integer number (53050561776).

Almost surely, 2^212201011109 is an apocalyptic number.

It is an amenable number.

212201011109 is a deficient number, since it is larger than the sum of its proper divisors (1235995).

212201011109 is a wasteful number, since it uses less digits than its factorization.

212201011109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235994.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 212201011109 in words is "two hundred twelve billion, two hundred one million, eleven thousand, one hundred nine".