1222100211077 has 2 divisors, whose sum is σ = 1222100211078. Its totient is φ = 1222100211076.

The previous prime is 1222100210999. The next prime is 1222100211091. The reversal of 1222100211077 is 7701120012221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1153188185956 + 68912025121 = 1073866^2 + 262511^2 .

It is an emirp because it is prime and its reverse (7701120012221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222100211077 - 2¹² = 1222100206981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222100211677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611050105538 + 611050105539.

It is an arithmetic number, because the mean of its divisors is an integer number (611050105539).

Almost surely, 2^{1222100211077} is an apocalyptic number.

It is an amenable number.

1222100211077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222100211077 is an equidigital number, since it uses as much as digits as its factorization.

1222100211077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 26.

Adding to 1222100211077 its reverse (7701120012221), we get a palindrome (8923220223298).

The spelling of 1222100211077 in words is "one trillion, two hundred twenty-two billion, one hundred million, two hundred eleven thousand, seventy-seven".