21433440322234 has 4 divisors (see below), whose sum is σ = 32150160483354. Its totient is φ = 10716720161116.

The previous prime is 21433440322223. The next prime is 21433440322243. The reversal of 21433440322234 is 43222304433412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14007406566609 + 7426033755625 = 3742647^2 + 2725075^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21433440322193 and 21433440322202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5358360080557 + ... + 5358360080560.

Almost surely, 2^{21433440322234} is an apocalyptic number.

21433440322234 is a deficient number, since it is larger than the sum of its proper divisors (10716720161120).

21433440322234 is a wasteful number, since it uses less digits than its factorization.

21433440322234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10716720161119.

The product of its (nonzero) digits is 331776, while the sum is 37.

Adding to 21433440322234 its reverse (43222304433412), we get a palindrome (64655744755646).

The spelling of 21433440322234 in words is "twenty-one trillion, four hundred thirty-three billion, four hundred forty million, three hundred twenty-two thousand, two hundred thirty-four".