1211020101227 has 2 divisors, whose sum is σ = 1211020101228. Its totient is φ = 1211020101226.

The previous prime is 1211020101169. The next prime is 1211020101229. The reversal of 1211020101227 is 7221010201121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211020101227 - 2²⁶ = 1210952992363 is a prime.

Together with 1211020101229, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211020101199 and 1211020101208.

It is not a weakly prime, because it can be changed into another prime (1211020101229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605510050613 + 605510050614.

It is an arithmetic number, because the mean of its divisors is an integer number (605510050614).

Almost surely, 2^{1211020101227} is an apocalyptic number.

1211020101227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211020101227 is an equidigital number, since it uses as much as digits as its factorization.

1211020101227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 1211020101227 its reverse (7221010201121), we get a palindrome (8432030302348).

The spelling of 1211020101227 in words is "one trillion, two hundred eleven billion, twenty million, one hundred one thousand, two hundred twenty-seven".