21023534244227 has 2 divisors, whose sum is σ = 21023534244228. Its totient is φ = 21023534244226.

The previous prime is 21023534244203. The next prime is 21023534244283. The reversal of 21023534244227 is 72244243532012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21023534244227 - 2²² = 21023530049923 is a prime.

It is not a weakly prime, because it can be changed into another prime (21023534240227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511767122113 + 10511767122114.

It is an arithmetic number, because the mean of its divisors is an integer number (10511767122114).

Almost surely, 2^{21023534244227} is an apocalyptic number.

21023534244227 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023534244227 is an equidigital number, since it uses as much as digits as its factorization.

21023534244227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 41.

Adding to 21023534244227 its reverse (72244243532012), we get a palindrome (93267777776239).

The spelling of 21023534244227 in words is "twenty-one trillion, twenty-three billion, five hundred thirty-four million, two hundred forty-four thousand, two hundred twenty-seven".