22100012222177 has 2 divisors, whose sum is σ = 22100012222178. Its totient is φ = 22100012222176.

The previous prime is 22100012222173. The next prime is 22100012222203. The reversal of 22100012222177 is 77122221000122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15685726591441 + 6414285630736 = 3960521^2 + 2532644^2 .

It is a cyclic number.

It is not a de Polignac number, because 22100012222177 - 2² = 22100012222173 is a prime.

It is a super-2 number, since 2×22100012222177² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22100012222173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050006111088 + 11050006111089.

It is an arithmetic number, because the mean of its divisors is an integer number (11050006111089).

Almost surely, 2^{22100012222177} is an apocalyptic number.

It is an amenable number.

22100012222177 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100012222177 is an equidigital number, since it uses as much as digits as its factorization.

22100012222177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 29.

Adding to 22100012222177 its reverse (77122221000122), we get a palindrome (99222233222299).

The spelling of 22100012222177 in words is "twenty-two trillion, one hundred billion, twelve million, two hundred twenty-two thousand, one hundred seventy-seven".