21233421040334 has 16 divisors (see below), whose sum is σ = 32215290053760. Its totient is φ = 10495607324280.

The previous prime is 21233421040303. The next prime is 21233421040361. The reversal of 21233421040334 is 43304012433212.

It is a self number, because there is not a number n which added to its sum of digits gives 21233421040334.

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, 154006364 + ... + 154144175.

It is an arithmetic number, because the mean of its divisors is an integer number (2013455628360).

Almost surely, 2^{21233421040334} is an apocalyptic number.

21233421040334 is a deficient number, since it is larger than the sum of its proper divisors (10981869013426).

21233421040334 is a wasteful number, since it uses less digits than its factorization.

21233421040334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308150935.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 21233421040334 its reverse (43304012433212), we get a palindrome (64537433473546).

The spelling of 21233421040334 in words is "twenty-one trillion, two hundred thirty-three billion, four hundred twenty-one million, forty thousand, three hundred thirty-four".