21114645224 has 8 divisors (see below), whose sum is σ = 39589959810. Its totient is φ = 10557322608.

The previous prime is 21114645217. The next prime is 21114645247. The reversal of 21114645224 is 42254641112.

It can be written as a sum of positive squares in only one way, i.e., 18409605124 + 2705040100 = 135682^2 + 52010^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1319665319 + ... + 1319665334.

Almost surely, 2^21114645224 is an apocalyptic number.

It is an amenable number.

21114645224 is a deficient number, since it is larger than the sum of its proper divisors (18475314586).

21114645224 is a wasteful number, since it uses less digits than its factorization.

21114645224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639330659 (or 2639330655 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The spelling of 21114645224 in words is "twenty-one billion, one hundred fourteen million, six hundred forty-five thousand, two hundred twenty-four".