21433442302 has 4 divisors (see below), whose sum is σ = 32150163456. Its totient is φ = 10716721150.

The previous prime is 21433442281. The next prime is 21433442323. The reversal of 21433442302 is 20324433412.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21433442281) and next prime (21433442323).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5358360574 + ... + 5358360577.

It is an arithmetic number, because the mean of its divisors is an integer number (8037540864).

Almost surely, 2^21433442302 is an apocalyptic number.

21433442302 is a deficient number, since it is larger than the sum of its proper divisors (10716721154).

21433442302 is a wasteful number, since it uses less digits than its factorization.

21433442302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10716721153.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 21433442302 its reverse (20324433412), we get a palindrome (41757875714).

The spelling of 21433442302 in words is "twenty-one billion, four hundred thirty-three million, four hundred forty-two thousand, three hundred two".