200021211010109 has 4 divisors (see below), whose sum is σ = 200068486176480. Its totient is φ = 199973935843740.

The previous prime is 200021211010079. The next prime is 200021211010141. The reversal of 200021211010109 is 901010112120002.

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 200021211010109 - 2⁸ = 200021211009853 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 (200021211012109) 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, 23637576839 + ... + 23637585300.

It is an arithmetic number, because the mean of its divisors is an integer number (50017121544120).

Almost surely, 2^{200021211010109} is an apocalyptic number.

It is an amenable number.

200021211010109 is a deficient number, since it is larger than the sum of its proper divisors (47275166371).

200021211010109 is an equidigital number, since it uses as much as digits as its factorization.

200021211010109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47275166370.

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

The spelling of 200021211010109 in words is "two hundred trillion, twenty-one billion, two hundred eleven million, ten thousand, one hundred nine".