12002021167 has 2 divisors, whose sum is σ = 12002021168. Its totient is φ = 12002021166.

The previous prime is 12002021149. The next prime is 12002021173. The reversal of 12002021167 is 76112020021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12002021167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12002021107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001010583 + 6001010584.

It is an arithmetic number, because the mean of its divisors is an integer number (6001010584).

Almost surely, 2^12002021167 is an apocalyptic number.

12002021167 is a deficient number, since it is larger than the sum of its proper divisors (1).

12002021167 is an equidigital number, since it uses as much as digits as its factorization.

12002021167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 12002021167 its reverse (76112020021), we get a palindrome (88114041188).

The spelling of 12002021167 in words is "twelve billion, two million, twenty-one thousand, one hundred sixty-seven".