21213735286 has 8 divisors (see below), whose sum is σ = 31938022944. Its totient is φ = 10567727640.

The previous prime is 21213735233. The next prime is 21213735293. The reversal of 21213735286 is 68253731212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19569325 + ... + 19570408.

It is an arithmetic number, because the mean of its divisors is an integer number (3992252868).

Almost surely, 2^21213735286 is an apocalyptic number.

21213735286 is a deficient number, since it is larger than the sum of its proper divisors (10724287658).

21213735286 is a wasteful number, since it uses less digits than its factorization.

21213735286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39140006.

The product of its digits is 120960, while the sum is 40.

The spelling of 21213735286 in words is "twenty-one billion, two hundred thirteen million, seven hundred thirty-five thousand, two hundred eighty-six".