21144883224 has 32 divisors (see below), whose sum is σ = 53651200320. Its totient is φ = 6943095456.

The previous prime is 21144883147. The next prime is 21144883231. The reversal of 21144883224 is 42238844112.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6573294 + ... + 6576509.

It is an arithmetic number, because the mean of its divisors is an integer number (1676600010).

Almost surely, 2^21144883224 is an apocalyptic number.

21144883224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21144883224 is an abundant number, since it is smaller than the sum of its proper divisors (32506317096).

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

21144883224 is a wasteful number, since it uses less digits than its factorization.

21144883224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13149879 (or 13149875 counting only the distinct ones).

The product of its digits is 98304, while the sum is 39.

The spelling of 21144883224 in words is "twenty-one billion, one hundred forty-four million, eight hundred eighty-three thousand, two hundred twenty-four".