21713072230 has 32 divisors (see below), whose sum is σ = 40292645184. Its totient is φ = 8418324096.

The previous prime is 21713072189. The next prime is 21713072239. The reversal of 21713072230 is 3227031712.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21713072239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14257 + ... + 208876.

It is an arithmetic number, because the mean of its divisors is an integer number (1259145162).

Almost surely, 2^21713072230 is an apocalyptic number.

21713072230 is a deficient number, since it is larger than the sum of its proper divisors (18579572954).

21713072230 is a wasteful number, since it uses less digits than its factorization.

21713072230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223440.

The product of its (nonzero) digits is 3528, while the sum is 28.

The spelling of 21713072230 in words is "twenty-one billion, seven hundred thirteen million, seventy-two thousand, two hundred thirty".