21112606723 has 12 divisors (see below), whose sum is σ = 23026077480. Its totient is φ = 19348333056.

The previous prime is 21112606717. The next prime is 21112606759. The reversal of 21112606723 is 32760621112.

It is not a de Polignac number, because 21112606723 - 2³³ = 12522672131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112606783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 425886 + ... + 472867.

It is an arithmetic number, because the mean of its divisors is an integer number (1918839790).

Almost surely, 2^21112606723 is an apocalyptic number.

21112606723 is a deficient number, since it is larger than the sum of its proper divisors (1913470757).

21112606723 is a wasteful number, since it uses less digits than its factorization.

21112606723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898918 (or 898905 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The spelling of 21112606723 in words is "twenty-one billion, one hundred twelve million, six hundred six thousand, seven hundred twenty-three".