20002012197 has 4 divisors (see below), whose sum is σ = 26669349600. Its totient is φ = 13334674796.

The previous prime is 20002012189. The next prime is 20002012243. The reversal of 20002012197 is 79121020002.

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 20002012197 - 2³ = 20002012189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002012187) 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, 3333668697 + ... + 3333668702.

It is an arithmetic number, because the mean of its divisors is an integer number (6667337400).

Almost surely, 2^20002012197 is an apocalyptic number.

It is an amenable number.

20002012197 is a deficient number, since it is larger than the sum of its proper divisors (6667337403).

20002012197 is an equidigital number, since it uses as much as digits as its factorization.

20002012197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6667337402.

The product of its (nonzero) digits is 504, while the sum is 24.

Adding to 20002012197 its reverse (79121020002), we get a palindrome (99123032199).

The spelling of 20002012197 in words is "twenty billion, two million, twelve thousand, one hundred ninety-seven".