21083000351 has 16 divisors (see below), whose sum is σ = 24590580480. Its totient is φ = 17701535040.

The previous prime is 21083000333. The next prime is 21083000371. The reversal of 21083000351 is 15300038012.

It is a de Polignac number, because none of the positive numbers 2^k-21083000351 is a prime.

It is a super-2 number, since 2×21083000351² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21083000311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25220 + ... + 206886.

It is an arithmetic number, because the mean of its divisors is an integer number (1536911280).

Almost surely, 2^21083000351 is an apocalyptic number.

21083000351 is a deficient number, since it is larger than the sum of its proper divisors (3507580129).

21083000351 is a wasteful number, since it uses less digits than its factorization.

21083000351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182014.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 21083000351 its reverse (15300038012), we get a palindrome (36383038363).

The spelling of 21083000351 in words is "twenty-one billion, eighty-three million, three hundred fifty-one", and thus it is an aban number.