21322021343 has 8 divisors (see below), whose sum is σ = 24543335040. Its totient is φ = 18144535320.

The previous prime is 21322021337. The next prime is 21322021403. The reversal of 21322021343 is 34312022312.

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 21322021343 - 2⁸ = 21322021087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322021943) 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, 10955873 + ... + 10957818.

It is an arithmetic number, because the mean of its divisors is an integer number (3067916880).

Almost surely, 2^21322021343 is an apocalyptic number.

21322021343 is a deficient number, since it is larger than the sum of its proper divisors (3221313697).

21322021343 is a wasteful number, since it uses less digits than its factorization.

21322021343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21913837.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21322021343 its reverse (34312022312), we get a palindrome (55634043655).

The spelling of 21322021343 in words is "twenty-one billion, three hundred twenty-two million, twenty-one thousand, three hundred forty-three".