21244524431011 has 8 divisors (see below), whose sum is σ = 24288199567200. Its totient is φ = 18203035063488.

The previous prime is 21244524430963. The next prime is 21244524431017. The reversal of 21244524431011 is 11013442544212.

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

It is a cyclic number.

It is not a de Polignac number, because 21244524431011 - 2²⁹ = 21243987560099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21244524431017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546421336 + ... + 546460213.

It is an arithmetic number, because the mean of its divisors is an integer number (3036024945900).

Almost surely, 2^{21244524431011} is an apocalyptic number.

21244524431011 is a deficient number, since it is larger than the sum of its proper divisors (3043675136189).

21244524431011 is a wasteful number, since it uses less digits than its factorization.

21244524431011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092884333.

The product of its (nonzero) digits is 30720, while the sum is 34.

Adding to 21244524431011 its reverse (11013442544212), we get a palindrome (32257966975223).

The spelling of 21244524431011 in words is "twenty-one trillion, two hundred forty-four billion, five hundred twenty-four million, four hundred thirty-one thousand, eleven".