21422222412 has 72 divisors (see below), whose sum is σ = 50888577600. Its totient is φ = 7013601600.

The previous prime is 21422222399. The next prime is 21422222501.

21422222412 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21422222412² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 17014639 + ... + 17015897.

It is an arithmetic number, because the mean of its divisors is an integer number (706785800).

Almost surely, 2^21422222412 is an apocalyptic number.

It is an amenable number.

21422222412 is an abundant number, since it is smaller than the sum of its proper divisors (29466355188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21422222412 is a wasteful number, since it uses less digits than its factorization.

21422222412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607 (or 1504 counting only the distinct ones).

The product of its digits is 2048, while the sum is 24.

The spelling of 21422222412 in words is "twenty-one billion, four hundred twenty-two million, two hundred twenty-two thousand, four hundred twelve".