21654050227 has 2 divisors, whose sum is σ = 21654050228. Its totient is φ = 21654050226.

The previous prime is 21654050213. The next prime is 21654050251. The reversal of 21654050227 is 72205045612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21654050227 - 2¹⁵ = 21654017459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21654050192 and 21654050201.

It is not a weakly prime, because it can be changed into another prime (21654050267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10827025113 + 10827025114.

It is an arithmetic number, because the mean of its divisors is an integer number (10827025114).

Almost surely, 2^21654050227 is an apocalyptic number.

21654050227 is a deficient number, since it is larger than the sum of its proper divisors (1).

21654050227 is an equidigital number, since it uses as much as digits as its factorization.

21654050227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 34.

Adding to 21654050227 its reverse (72205045612), we get a palindrome (93859095839).

The spelling of 21654050227 in words is "twenty-one billion, six hundred fifty-four million, fifty thousand, two hundred twenty-seven".