21924749011 has 16 divisors (see below), whose sum is σ = 24963199488. Its totient is φ = 19060888000.

The previous prime is 21924749009. The next prime is 21924749017. The reversal of 21924749011 is 11094742912.

It is not a de Polignac number, because 21924749011 - 2¹ = 21924749009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21924749017) 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, 2154786 + ... + 2164936.

It is an arithmetic number, because the mean of its divisors is an integer number (1560199968).

Almost surely, 2^21924749011 is an apocalyptic number.

21924749011 is a deficient number, since it is larger than the sum of its proper divisors (3038450477).

21924749011 is a wasteful number, since it uses less digits than its factorization.

21924749011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18722.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 21924749011 in words is "twenty-one billion, nine hundred twenty-four million, seven hundred forty-nine thousand, eleven".