20220021167 has 2 divisors, whose sum is σ = 20220021168. Its totient is φ = 20220021166.

The previous prime is 20220021139. The next prime is 20220021271. The reversal of 20220021167 is 76112002202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20220021167 - 2¹⁸ = 20219759023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20220021667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110010583 + 10110010584.

It is an arithmetic number, because the mean of its divisors is an integer number (10110010584).

Almost surely, 2^20220021167 is an apocalyptic number.

20220021167 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220021167 is an equidigital number, since it uses as much as digits as its factorization.

20220021167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 20220021167 its reverse (76112002202), we get a palindrome (96332023369).

The spelling of 20220021167 in words is "twenty billion, two hundred twenty million, twenty-one thousand, one hundred sixty-seven".