122217013766 has 4 divisors (see below), whose sum is σ = 183325520652. Its totient is φ = 61108506882.

The previous prime is 122217013741. The next prime is 122217013777. The reversal of 122217013766 is 667310712221.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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, 30554253440 + ... + 30554253443.

It is an arithmetic number, because the mean of its divisors is an integer number (45831380163).

Almost surely, 2^122217013766 is an apocalyptic number.

122217013766 is a deficient number, since it is larger than the sum of its proper divisors (61108506886).

122217013766 is an equidigital number, since it uses as much as digits as its factorization.

122217013766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61108506885.

The product of its (nonzero) digits is 42336, while the sum is 38.

Adding to 122217013766 its reverse (667310712221), we get a palindrome (789527725987).

The spelling of 122217013766 in words is "one hundred twenty-two billion, two hundred seventeen million, thirteen thousand, seven hundred sixty-six".