21113311342024 has 32 divisors (see below), whose sum is σ = 43188922758240. Its totient is φ = 9596381011200.

The previous prime is 21113311342021. The next prime is 21113311342091. The reversal of 21113311342024 is 42024311331112.

It is a junction number, because it is equal to n+sod(n) for n = 21113311341983 and 21113311342001.

It is not an unprimeable number, because it can be changed into a prime (21113311342021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5764257 + ... + 8686384.

It is an arithmetic number, because the mean of its divisors is an integer number (1349653836195).

Almost surely, 2^{21113311342024} is an apocalyptic number.

It is an amenable number.

21113311342024 is an abundant number, since it is smaller than the sum of its proper divisors (22075611416216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21113311342024 is a wasteful number, since it uses less digits than its factorization.

21113311342024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14467261 (or 14467257 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 21113311342024 its reverse (42024311331112), we get a palindrome (63137622673136).

The spelling of 21113311342024 in words is "twenty-one trillion, one hundred thirteen billion, three hundred eleven million, three hundred forty-two thousand, twenty-four".