21227103413 has 4 divisors (see below), whose sum is σ = 21543925920. Its totient is φ = 20910280908.

The previous prime is 21227103379. The next prime is 21227103421. The reversal of 21227103413 is 31430172212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21227103413 - 2¹⁸ = 21226841269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21227103613) 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, 158411153 + ... + 158411286.

It is an arithmetic number, because the mean of its divisors is an integer number (5385981480).

Almost surely, 2^21227103413 is an apocalyptic number.

It is an amenable number.

21227103413 is a deficient number, since it is larger than the sum of its proper divisors (316822507).

21227103413 is an equidigital number, since it uses as much as digits as its factorization.

21227103413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316822506.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 21227103413 its reverse (31430172212), we get a palindrome (52657275625).

The spelling of 21227103413 in words is "twenty-one billion, two hundred twenty-seven million, one hundred three thousand, four hundred thirteen".