21333243424141 has 4 divisors (see below), whose sum is σ = 23272629189984. Its totient is φ = 19393857658300.

The previous prime is 21333243424117. The next prime is 21333243424159. The reversal of 21333243424141 is 14142434233312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21333243424141 - 2⁵ = 21333243424109 is a prime.

It is a super-3 number, since 3×21333243424141³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21333243424141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333213424141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 969692882905 + ... + 969692882926.

It is an arithmetic number, because the mean of its divisors is an integer number (5818157297496).

Almost surely, 2^{21333243424141} is an apocalyptic number.

It is an amenable number.

21333243424141 is a deficient number, since it is larger than the sum of its proper divisors (1939385765843).

21333243424141 is a wasteful number, since it uses less digits than its factorization.

21333243424141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939385765842.

The product of its digits is 165888, while the sum is 37.

Adding to 21333243424141 its reverse (14142434233312), we get a palindrome (35475677657453).

The spelling of 21333243424141 in words is "twenty-one trillion, three hundred thirty-three billion, two hundred forty-three million, four hundred twenty-four thousand, one hundred forty-one".