20530212167 has 2 divisors, whose sum is σ = 20530212168. Its totient is φ = 20530212166.

The previous prime is 20530212133. The next prime is 20530212173. The reversal of 20530212167 is 76121203502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20530212167 - 2⁶ = 20530212103 is a prime.

It is a super-2 number, since 2×20530212167² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20530212067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10265106083 + 10265106084.

It is an arithmetic number, because the mean of its divisors is an integer number (10265106084).

Almost surely, 2^20530212167 is an apocalyptic number.

20530212167 is a deficient number, since it is larger than the sum of its proper divisors (1).

20530212167 is an equidigital number, since it uses as much as digits as its factorization.

20530212167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 20530212167 its reverse (76121203502), we get a palindrome (96651415669).

The spelling of 20530212167 in words is "twenty billion, five hundred thirty million, two hundred twelve thousand, one hundred sixty-seven".