20199489227 has 2 divisors, whose sum is σ = 20199489228. Its totient is φ = 20199489226.

The previous prime is 20199489181. The next prime is 20199489241. The reversal of 20199489227 is 72298499102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20199489227 - 2¹⁰ = 20199488203 is a prime.

It is not a weakly prime, because it can be changed into another prime (20199489257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10099744613 + 10099744614.

It is an arithmetic number, because the mean of its divisors is an integer number (10099744614).

Almost surely, 2^20199489227 is an apocalyptic number.

20199489227 is a deficient number, since it is larger than the sum of its proper divisors (1).

20199489227 is an equidigital number, since it uses as much as digits as its factorization.

20199489227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 20199489227 in words is "twenty billion, one hundred ninety-nine million, four hundred eighty-nine thousand, two hundred twenty-seven".