20201000215189 has 2 divisors, whose sum is σ = 20201000215190. Its totient is φ = 20201000215188.

The previous prime is 20201000215051. The next prime is 20201000215211. The reversal of 20201000215189 is 98151200010202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19386259298289 + 814740916900 = 4402983^2 + 902630^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201000215189 - 2¹³ = 20201000206997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20201000215189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201000245189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100500107594 + 10100500107595.

It is an arithmetic number, because the mean of its divisors is an integer number (10100500107595).

Almost surely, 2^{20201000215189} is an apocalyptic number.

It is an amenable number.

20201000215189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201000215189 is an equidigital number, since it uses as much as digits as its factorization.

20201000215189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 31.

The spelling of 20201000215189 in words is "twenty trillion, two hundred one billion, two hundred fifteen thousand, one hundred eighty-nine".