21340142330233 has 4 divisors (see below), whose sum is σ = 21610270714240. Its totient is φ = 21070013946228.

The previous prime is 21340142330209. The next prime is 21340142330281. The reversal of 21340142330233 is 33203324104312.

It is a happy number.

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 21340142330233 - 2⁹ = 21340142329721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21340142330195 and 21340142330204.

It is not an unprimeable number, because it can be changed into a prime (21340142339233) 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, 135064191885 + ... + 135064192042.

It is an arithmetic number, because the mean of its divisors is an integer number (5402567678560).

Almost surely, 2^{21340142330233} is an apocalyptic number.

It is an amenable number.

21340142330233 is a deficient number, since it is larger than the sum of its proper divisors (270128384007).

21340142330233 is an equidigital number, since it uses as much as digits as its factorization.

21340142330233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270128384006.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 21340142330233 its reverse (33203324104312), we get a palindrome (54543466434545).

The spelling of 21340142330233 in words is "twenty-one trillion, three hundred forty billion, one hundred forty-two million, three hundred thirty thousand, two hundred thirty-three".