1227794946121 has 2 divisors, whose sum is σ = 1227794946122. Its totient is φ = 1227794946120.

The previous prime is 1227794946043. The next prime is 1227794946167. The reversal of 1227794946121 is 1216494977221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1226523025225 + 1271920896 = 1107485^2 + 35664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1227794946121 - 2²⁹ = 1227258075209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1227794946221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613897473060 + 613897473061.

It is an arithmetic number, because the mean of its divisors is an integer number (613897473061).

Almost surely, 2^{1227794946121} is an apocalyptic number.

It is an amenable number.

1227794946121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1227794946121 is an equidigital number, since it uses as much as digits as its factorization.

1227794946121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 55.

The spelling of 1227794946121 in words is "one trillion, two hundred twenty-seven billion, seven hundred ninety-four million, nine hundred forty-six thousand, one hundred twenty-one".