12102220177 has 2 divisors, whose sum is σ = 12102220178. Its totient is φ = 12102220176.

The previous prime is 12102220159. The next prime is 12102220213. The reversal of 12102220177 is 77102220121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7914059521 + 4188160656 = 88961^2 + 64716^2 .

It is a cyclic number.

It is not a de Polignac number, because 12102220177 - 2¹¹ = 12102218129 is a prime.

It is a super-2 number, since 2×12102220177² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12102220157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051110088 + 6051110089.

It is an arithmetic number, because the mean of its divisors is an integer number (6051110089).

Almost surely, 2^12102220177 is an apocalyptic number.

It is an amenable number.

12102220177 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102220177 is an equidigital number, since it uses as much as digits as its factorization.

12102220177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 12102220177 its reverse (77102220121), we get a palindrome (89204440298).

The spelling of 12102220177 in words is "twelve billion, one hundred two million, two hundred twenty thousand, one hundred seventy-seven".