21133421443142 has 16 divisors (see below), whose sum is σ = 32389744376160. Its totient is φ = 10337969571072.

The previous prime is 21133421443111. The next prime is 21133421443151. The reversal of 21133421443142 is 24134412433112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282359042 + ... + 282433877.

It is an arithmetic number, because the mean of its divisors is an integer number (2024359023510).

Almost surely, 2^{21133421443142} is an apocalyptic number.

21133421443142 is a deficient number, since it is larger than the sum of its proper divisors (11256322933018).

21133421443142 is a wasteful number, since it uses less digits than its factorization.

21133421443142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564793327.

The product of its digits is 55296, while the sum is 35.

Adding to 21133421443142 its reverse (24134412433112), we get a palindrome (45267833876254).

The spelling of 21133421443142 in words is "twenty-one trillion, one hundred thirty-three billion, four hundred twenty-one million, four hundred forty-three thousand, one hundred forty-two".