20001202201191 has 16 divisors (see below), whose sum is σ = 27289436232960. Its totient is φ = 13023573628800.

The previous prime is 20001202201139. The next prime is 20001202201193. The reversal of 20001202201191 is 19110220210002.

It is not a de Polignac number, because 20001202201191 - 2²⁵ = 20001168646759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001202201193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 877615 + ... + 6385343.

It is an arithmetic number, because the mean of its divisors is an integer number (1705589764560).

Almost surely, 2^{20001202201191} is an apocalyptic number.

20001202201191 is a deficient number, since it is larger than the sum of its proper divisors (7288234031769).

20001202201191 is a wasteful number, since it uses less digits than its factorization.

20001202201191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5535926.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 20001202201191 its reverse (19110220210002), we get a palindrome (39111422411193).

The spelling of 20001202201191 in words is "twenty trillion, one billion, two hundred two million, two hundred one thousand, one hundred ninety-one".