12211120999177 has 2 divisors, whose sum is σ = 12211120999178. Its totient is φ = 12211120999176.

The previous prime is 12211120999171. The next prime is 12211120999219. The reversal of 12211120999177 is 77199902111221.

12211120999177 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10409469829641 + 1801651169536 = 3226371^2 + 1342256^2 .

It is an emirp because it is prime and its reverse (77199902111221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12211120999177 is a prime.

It is a super-2 number, since 2×12211120999177² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12211120999171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105560499588 + 6105560499589.

It is an arithmetic number, because the mean of its divisors is an integer number (6105560499589).

Almost surely, 2^{12211120999177} is an apocalyptic number.

It is an amenable number.

12211120999177 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211120999177 is an equidigital number, since it uses as much as digits as its factorization.

12211120999177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 52.

The spelling of 12211120999177 in words is "twelve trillion, two hundred eleven billion, one hundred twenty million, nine hundred ninety-nine thousand, one hundred seventy-seven".