21233434434000 has 80 divisors (see below), whose sum is σ = 68456592634560. Its totient is φ = 5662249180800.

The previous prime is 21233434433987. The next prime is 21233434434019. The reversal of 21233434434000 is 43443433212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1769446870 + ... + 1769458869.

It is an arithmetic number, because the mean of its divisors is an integer number (855707407932).

Almost surely, 2^{21233434434000} is an apocalyptic number.

21233434434000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21233434434000 is an abundant number, since it is smaller than the sum of its proper divisors (47223158200560).

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

21233434434000 is a wasteful number, since it uses less digits than its factorization.

21233434434000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3538905765 (or 3538905749 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 21233434434000 its reverse (43443433212), we get a palindrome (21276877867212).

The spelling of 21233434434000 in words is "twenty-one trillion, two hundred thirty-three billion, four hundred thirty-four million, four hundred thirty-four thousand".