21011110010227 has 2 divisors, whose sum is σ = 21011110010228. Its totient is φ = 21011110010226.

The previous prime is 21011110010003. The next prime is 21011110010243. The reversal of 21011110010227 is 72201001111012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21011110010227 is a prime.

It is a super-2 number, since 2×21011110010227² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21011110014227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505555005113 + 10505555005114.

It is an arithmetic number, because the mean of its divisors is an integer number (10505555005114).

Almost surely, 2^{21011110010227} is an apocalyptic number.

21011110010227 is a deficient number, since it is larger than the sum of its proper divisors (1).

21011110010227 is an equidigital number, since it uses as much as digits as its factorization.

21011110010227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 21011110010227 its reverse (72201001111012), we get a palindrome (93212111121239).

The spelling of 21011110010227 in words is "twenty-one trillion, eleven billion, one hundred ten million, ten thousand, two hundred twenty-seven".