21421090415183 has 2 divisors, whose sum is σ = 21421090415184. Its totient is φ = 21421090415182.

The previous prime is 21421090415159. The next prime is 21421090415201. The reversal of 21421090415183 is 38151409012412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21421090415183 - 2³⁰ = 21420016673359 is a prime.

It is a super-2 number, since 2×21421090415183² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21421090415183.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21421090415113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10710545207591 + 10710545207592.

It is an arithmetic number, because the mean of its divisors is an integer number (10710545207592).

Almost surely, 2^{21421090415183} is an apocalyptic number.

21421090415183 is a deficient number, since it is larger than the sum of its proper divisors (1).

21421090415183 is an equidigital number, since it uses as much as digits as its factorization.

21421090415183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 41.

Adding to 21421090415183 its reverse (38151409012412), we get a palindrome (59572499427595).

The spelling of 21421090415183 in words is "twenty-one trillion, four hundred twenty-one billion, ninety million, four hundred fifteen thousand, one hundred eighty-three".