21124706713 has 12 divisors (see below), whose sum is σ = 23224232304. Its totient is φ = 19200546200.

The previous prime is 21124706699. The next prime is 21124706717. The reversal of 21124706713 is 31760742112.

It is not a de Polignac number, because 21124706713 - 2²¹ = 21122609561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21124706717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 751278 + ... + 778888.

It is an arithmetic number, because the mean of its divisors is an integer number (1935352692).

Almost surely, 2^21124706713 is an apocalyptic number.

It is an amenable number.

21124706713 is a deficient number, since it is larger than the sum of its proper divisors (2099525591).

21124706713 is a wasteful number, since it uses less digits than its factorization.

21124706713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33956 (or 33945 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 21124706713 in words is "twenty-one billion, one hundred twenty-four million, seven hundred six thousand, seven hundred thirteen".