21348002083 has 4 divisors (see below), whose sum is σ = 22471581160. Its totient is φ = 20224423008.

The previous prime is 21348002077. The next prime is 21348002119. The reversal of 21348002083 is 38020084312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21348002083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21348002003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561789510 + ... + 561789547.

It is an arithmetic number, because the mean of its divisors is an integer number (5617895290).

Almost surely, 2^21348002083 is an apocalyptic number.

21348002083 is a deficient number, since it is larger than the sum of its proper divisors (1123579077).

21348002083 is a wasteful number, since it uses less digits than its factorization.

21348002083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123579076.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 21348002083 its reverse (38020084312), we get a palindrome (59368086395).

The spelling of 21348002083 in words is "twenty-one billion, three hundred forty-eight million, two thousand, eighty-three".