21110021000227 has 2 divisors, whose sum is σ = 21110021000228. Its totient is φ = 21110021000226.

The previous prime is 21110021000209. The next prime is 21110021000251. The reversal of 21110021000227 is 72200012001112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21110021000227 - 2³⁹ = 20560265186339 is a prime.

It is not a weakly prime, because it can be changed into another prime (21110021010227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555010500113 + 10555010500114.

It is an arithmetic number, because the mean of its divisors is an integer number (10555010500114).

Almost surely, 2^{21110021000227} is an apocalyptic number.

21110021000227 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110021000227 is an equidigital number, since it uses as much as digits as its factorization.

21110021000227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 21110021000227 its reverse (72200012001112), we get a palindrome (93310033001339).

The spelling of 21110021000227 in words is "twenty-one trillion, one hundred ten billion, twenty-one million, two hundred twenty-seven", and thus it is an aban number.