11921177 has 2 divisors, whose sum is σ = 11921178. Its totient is φ = 11921176.

The previous prime is 11921137. The next prime is 11921183. The reversal of 11921177 is 77112911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6635776 + 5285401 = 2576^2 + 2299^2 .

It is an emirp because it is prime and its reverse (77112911) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11921177 is a prime.

It is a super-2 number, since 2×11921177² = 284228922130658, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11921137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5960588 + 5960589.

It is an arithmetic number, because the mean of its divisors is an integer number (5960589).

Almost surely, 2^11921177 is an apocalyptic number.

It is an amenable number.

11921177 is a deficient number, since it is larger than the sum of its proper divisors (1).

11921177 is an equidigital number, since it uses as much as digits as its factorization.

11921177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882, while the sum is 29.

The square root of 11921177 is about 3452.7057505672. The cubic root of 11921177 is about 228.4404702022.

The spelling of 11921177 in words is "eleven million, nine hundred twenty-one thousand, one hundred seventy-seven".