21211433330342 has 32 divisors (see below), whose sum is σ = 33827790965760. Its totient is φ = 9952937394400.

The previous prime is 21211433330333. The next prime is 21211433330357. The reversal of 21211433330342 is 24303333411212.

It is a junction number, because it is equal to n+sod(n) for n = 21211433330299 and 21211433330308.

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, 124133159 + ... + 124303917.

It is an arithmetic number, because the mean of its divisors is an integer number (1057118467680).

Almost surely, 2^{21211433330342} is an apocalyptic number.

21211433330342 is a deficient number, since it is larger than the sum of its proper divisors (12616357635418).

21211433330342 is a wasteful number, since it uses less digits than its factorization.

21211433330342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221788.

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 21211433330342 its reverse (24303333411212), we get a palindrome (45514766741554).

The spelling of 21211433330342 in words is "twenty-one trillion, two hundred eleven billion, four hundred thirty-three million, three hundred thirty thousand, three hundred forty-two".