21433430111 has 8 divisors (see below), whose sum is σ = 22563985920. Its totient is φ = 20303122392.

The previous prime is 21433430077. The next prime is 21433430159. The reversal of 21433430111 is 11103433412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21433430111 - 2³⁰ = 20359688287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21433430191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130706 + ... + 244848.

It is an arithmetic number, because the mean of its divisors is an integer number (2820498240).

Almost surely, 2^21433430111 is an apocalyptic number.

21433430111 is a deficient number, since it is larger than the sum of its proper divisors (1130555809).

21433430111 is a wasteful number, since it uses less digits than its factorization.

21433430111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124045.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21433430111 its reverse (11103433412), we get a palindrome (32536863523).

The spelling of 21433430111 in words is "twenty-one billion, four hundred thirty-three million, four hundred thirty thousand, one hundred eleven".