21442224412 has 24 divisors (see below), whose sum is σ = 42950767104. Its totient is φ = 9175313712.

The previous prime is 21442224409. The next prime is 21442224437.

It is a happy number.

21442224412 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (28).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573688 + ... + 609919.

It is an arithmetic number, because the mean of its divisors is an integer number (1789615296).

Almost surely, 2^21442224412 is an apocalyptic number.

It is an amenable number.

21442224412 is an abundant number, since it is smaller than the sum of its proper divisors (21508542692).

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

21442224412 is a wasteful number, since it uses less digits than its factorization.

21442224412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184265 (or 1184263 counting only the distinct ones).

The product of its digits is 8192, while the sum is 28.

The spelling of 21442224412 in words is "twenty-one billion, four hundred forty-two million, two hundred twenty-four thousand, four hundred twelve".