22156422067 has 4 divisors (see below), whose sum is σ = 23860762240. Its totient is φ = 20452081896.

The previous prime is 22156422059. The next prime is 22156422073. The reversal of 22156422067 is 76022465122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22156422067 - 2³ = 22156422059 is a prime.

It is a super-2 number, since 2×22156422067² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22156420067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852170067 + ... + 852170092.

It is an arithmetic number, because the mean of its divisors is an integer number (5965190560).

Almost surely, 2^22156422067 is an apocalyptic number.

22156422067 is a deficient number, since it is larger than the sum of its proper divisors (1704340173).

22156422067 is a wasteful number, since it uses less digits than its factorization.

22156422067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704340172.

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 22156422067 its reverse (76022465122), we get a palindrome (98178887189).

The spelling of 22156422067 in words is "twenty-two billion, one hundred fifty-six million, four hundred twenty-two thousand, sixty-seven".