21433233242 has 32 divisors (see below), whose sum is σ = 34302610944. Its totient is φ = 10008864000.

The previous prime is 21433233197. The next prime is 21433233257. The reversal of 21433233242 is 24233233412.

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, 7088543 + ... + 7091565.

It is an arithmetic number, because the mean of its divisors is an integer number (1071956592).

Almost surely, 2^21433233242 is an apocalyptic number.

21433233242 is a deficient number, since it is larger than the sum of its proper divisors (12869377702).

21433233242 is a wasteful number, since it uses less digits than its factorization.

21433233242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4574.

The product of its digits is 20736, while the sum is 29.

Adding to 21433233242 its reverse (24233233412), we get a palindrome (45666466654).

The spelling of 21433233242 in words is "twenty-one billion, four hundred thirty-three million, two hundred thirty-three thousand, two hundred forty-two".