22156420067 has 2 divisors, whose sum is σ = 22156420068. Its totient is φ = 22156420066.

The previous prime is 22156420051. The next prime is 22156420103. The reversal of 22156420067 is 76002465122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22156420067 - 2⁴ = 22156420051 is a prime.

It is not a weakly prime, because it can be changed into another prime (22156420367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11078210033 + 11078210034.

It is an arithmetic number, because the mean of its divisors is an integer number (11078210034).

Almost surely, 2^22156420067 is an apocalyptic number.

22156420067 is a deficient number, since it is larger than the sum of its proper divisors (1).

22156420067 is an equidigital number, since it uses as much as digits as its factorization.

22156420067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

Adding to 22156420067 its reverse (76002465122), we get a palindrome (98158885189).

The spelling of 22156420067 in words is "twenty-two billion, one hundred fifty-six million, four hundred twenty thousand, sixty-seven".