21353351183 has 2 divisors, whose sum is σ = 21353351184. Its totient is φ = 21353351182.

The previous prime is 21353351113. The next prime is 21353351189. The reversal of 21353351183 is 38115335312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21353351183 - 2⁸ = 21353350927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21353351189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10676675591 + 10676675592.

It is an arithmetic number, because the mean of its divisors is an integer number (10676675592).

Almost surely, 2^21353351183 is an apocalyptic number.

21353351183 is a deficient number, since it is larger than the sum of its proper divisors (1).

21353351183 is an equidigital number, since it uses as much as digits as its factorization.

21353351183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

Adding to 21353351183 its reverse (38115335312), we get a palindrome (59468686495).

The spelling of 21353351183 in words is "twenty-one billion, three hundred fifty-three million, three hundred fifty-one thousand, one hundred eighty-three".