21163246224 has 40 divisors (see below), whose sum is σ = 54680762112. Its totient is φ = 7053248640.

The previous prime is 21163246213. The next prime is 21163246241. The reversal of 21163246224 is 42264236112.

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

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, 286209 + ... + 352479.

Almost surely, 2^21163246224 is an apocalyptic number.

21163246224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21163246224 is an abundant number, since it is smaller than the sum of its proper divisors (33517515888).

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

21163246224 is a wasteful number, since it uses less digits than its factorization.

21163246224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72935 (or 72929 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

The spelling of 21163246224 in words is "twenty-one billion, one hundred sixty-three million, two hundred forty-six thousand, two hundred twenty-four".