1121220020177 has 2 divisors, whose sum is σ = 1121220020178. Its totient is φ = 1121220020176.

The previous prime is 1121220020153. The next prime is 1121220020227. The reversal of 1121220020177 is 7710200221211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 862448399761 + 258771620416 = 928681^2 + 508696^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121220020177 - 2¹⁶ = 1121219954641 is a prime.

It is a super-2 number, since 2×1121220020177² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121220020677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560610010088 + 560610010089.

It is an arithmetic number, because the mean of its divisors is an integer number (560610010089).

Almost surely, 2^{1121220020177} is an apocalyptic number.

It is an amenable number.

1121220020177 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121220020177 is an equidigital number, since it uses as much as digits as its factorization.

1121220020177 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 1121220020177 its reverse (7710200221211), we get a palindrome (8831420241388).

The spelling of 1121220020177 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, twenty thousand, one hundred seventy-seven".