117220277 has 2 divisors, whose sum is σ = 117220278. Its totient is φ = 117220276.

The previous prime is 117220273. The next prime is 117220307. The reversal of 117220277 is 772022711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114789796 + 2430481 = 10714^2 + 1559^2 .

It is an emirp because it is prime and its reverse (772022711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117220277 - 2² = 117220273 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117220273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58610138 + 58610139.

It is an arithmetic number, because the mean of its divisors is an integer number (58610139).

Almost surely, 2^117220277 is an apocalyptic number.

It is an amenable number.

117220277 is a deficient number, since it is larger than the sum of its proper divisors (1).

117220277 is an equidigital number, since it uses as much as digits as its factorization.

117220277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 117220277 is about 10826.8313462435. The cubic root of 117220277 is about 489.4040749346.

Adding to 117220277 its reverse (772022711), we get a palindrome (889242988).

The spelling of 117220277 in words is "one hundred seventeen million, two hundred twenty thousand, two hundred seventy-seven".