21103212132227 has 2 divisors, whose sum is σ = 21103212132228. Its totient is φ = 21103212132226.

The previous prime is 21103212132199. The next prime is 21103212132241. The reversal of 21103212132227 is 72223121230112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21103212132227 - 2³² = 21098917164931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21103212132227.

It is not a weakly prime, because it can be changed into another prime (21103212102227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551606066113 + 10551606066114.

It is an arithmetic number, because the mean of its divisors is an integer number (10551606066114).

Almost surely, 2^{21103212132227} is an apocalyptic number.

21103212132227 is a deficient number, since it is larger than the sum of its proper divisors (1).

21103212132227 is an equidigital number, since it uses as much as digits as its factorization.

21103212132227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 21103212132227 its reverse (72223121230112), we get a palindrome (93326333362339).

The spelling of 21103212132227 in words is "twenty-one trillion, one hundred three billion, two hundred twelve million, one hundred thirty-two thousand, two hundred twenty-seven".