202001022109 has 4 divisors (see below), whose sum is σ = 202186856704. Its totient is φ = 201815187516.

The previous prime is 202001022053. The next prime is 202001022131. The reversal of 202001022109 is 901220100202.

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 202001022109 - 2²¹ = 201998924957 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 (202001422109) 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, 92915667 + ... + 92917840.

It is an arithmetic number, because the mean of its divisors is an integer number (50546714176).

Almost surely, 2^202001022109 is an apocalyptic number.

It is an amenable number.

202001022109 is a deficient number, since it is larger than the sum of its proper divisors (185834595).

202001022109 is a wasteful number, since it uses less digits than its factorization.

202001022109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185834594.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 202001022109 in words is "two hundred two billion, one million, twenty-two thousand, one hundred nine".