21244114416 has 40 divisors (see below), whose sum is σ = 62720719744. Its totient is φ = 6069746880.

The previous prime is 21244114399. The next prime is 21244114417. The reversal of 21244114416 is 61441144212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21244114417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31612930 + ... + 31613601.

Almost surely, 2^21244114416 is an apocalyptic number.

It is an amenable number.

21244114416 is an abundant number, since it is smaller than the sum of its proper divisors (41476605328).

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

21244114416 is a wasteful number, since it uses less digits than its factorization.

21244114416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63226549 (or 63226543 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

Adding to 21244114416 its reverse (61441144212), we get a palindrome (82685258628).

The spelling of 21244114416 in words is "twenty-one billion, two hundred forty-four million, one hundred fourteen thousand, four hundred sixteen".