21321141342 has 16 divisors (see below), whose sum is σ = 42653079552. Its totient is φ = 7105247640.

The previous prime is 21321141329. The next prime is 21321141367. The reversal of 21321141342 is 24314112312.

It is a super-5 number, since 5×21321141342⁵ (a number of 53 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424084 + ... + 471687.

It is an arithmetic number, because the mean of its divisors is an integer number (2665817472).

Almost surely, 2^21321141342 is an apocalyptic number.

21321141342 is an abundant number, since it is smaller than the sum of its proper divisors (21331938210).

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

21321141342 is a wasteful number, since it uses less digits than its factorization.

21321141342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899743.

The product of its digits is 1152, while the sum is 24.

Adding to 21321141342 its reverse (24314112312), we get a palindrome (45635253654).

The spelling of 21321141342 in words is "twenty-one billion, three hundred twenty-one million, one hundred forty-one thousand, three hundred forty-two".