210020001012191 has 4 divisors (see below), whose sum is σ = 210027615149952. Its totient is φ = 210012386874432.

The previous prime is 210020001012131. The next prime is 210020001012203. The reversal of 210020001012191 is 191210100020012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210020001012191 - 2²⁶ = 210019933903327 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 (210020001012121) 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, 3807027506 + ... + 3807082671.

It is an arithmetic number, because the mean of its divisors is an integer number (52506903787488).

Almost surely, 2^{210020001012191} is an apocalyptic number.

210020001012191 is a deficient number, since it is larger than the sum of its proper divisors (7614137761).

210020001012191 is an equidigital number, since it uses as much as digits as its factorization.

210020001012191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7614137760.

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

The spelling of 210020001012191 in words is "two hundred ten trillion, twenty billion, one million, twelve thousand, one hundred ninety-one".