21133304342 has 16 divisors (see below), whose sum is σ = 32443735632. Its totient is φ = 10318825440.

The previous prime is 21133304329. The next prime is 21133304359. The reversal of 21133304342 is 24340333112.

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, 455792 + ... + 500012.

It is an arithmetic number, because the mean of its divisors is an integer number (2027733477).

Almost surely, 2^21133304342 is an apocalyptic number.

21133304342 is a deficient number, since it is larger than the sum of its proper divisors (11310431290).

21133304342 is a wasteful number, since it uses less digits than its factorization.

21133304342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49823.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21133304342 its reverse (24340333112), we get a palindrome (45473637454).

The spelling of 21133304342 in words is "twenty-one billion, one hundred thirty-three million, three hundred four thousand, three hundred forty-two".