21112352726 has 4 divisors (see below), whose sum is σ = 31668529092. Its totient is φ = 10556176362.

The previous prime is 21112352711. The next prime is 21112352743. The reversal of 21112352726 is 62725321112.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21112352692 and 21112352701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278088180 + ... + 5278088183.

It is an arithmetic number, because the mean of its divisors is an integer number (7917132273).

Almost surely, 2^21112352726 is an apocalyptic number.

21112352726 is a deficient number, since it is larger than the sum of its proper divisors (10556176366).

21112352726 is a wasteful number, since it uses less digits than its factorization.

21112352726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556176365.

The product of its digits is 10080, while the sum is 32.

Adding to 21112352726 its reverse (62725321112), we get a palindrome (83837673838).

The spelling of 21112352726 in words is "twenty-one billion, one hundred twelve million, three hundred fifty-two thousand, seven hundred twenty-six".