21222422067 has 32 divisors (see below), whose sum is σ = 35339157504. Its totient is φ = 11005783200.

The previous prime is 21222422041. The next prime is 21222422083. The reversal of 21222422067 is 76022422212.

It is not a de Polignac number, because 21222422067 - 2¹¹ = 21222420019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21222422567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57342 + ... + 213852.

It is an arithmetic number, because the mean of its divisors is an integer number (1104348672).

Almost surely, 2^21222422067 is an apocalyptic number.

21222422067 is a deficient number, since it is larger than the sum of its proper divisors (14116735437).

21222422067 is a wasteful number, since it uses less digits than its factorization.

21222422067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157119.

The product of its (nonzero) digits is 10752, while the sum is 30.

Adding to 21222422067 its reverse (76022422212), we get a palindrome (97244844279).

The spelling of 21222422067 in words is "twenty-one billion, two hundred twenty-two million, four hundred twenty-two thousand, sixty-seven".