122018761 has 2 divisors, whose sum is σ = 122018762. Its totient is φ = 122018760.

The previous prime is 122018737. The next prime is 122018791. The reversal of 122018761 is 167810221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115154361 + 6864400 = 10731^2 + 2620^2 .

It is an emirp because it is prime and its reverse (167810221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122018761 is a prime.

It is not a weakly prime, because it can be changed into another prime (122018731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61009380 + 61009381.

It is an arithmetic number, because the mean of its divisors is an integer number (61009381).

Almost surely, 2^122018761 is an apocalyptic number.

It is an amenable number.

122018761 is a deficient number, since it is larger than the sum of its proper divisors (1).

122018761 is an equidigital number, since it uses as much as digits as its factorization.

122018761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 122018761 is about 11046.2102551056. The cubic root of 122018761 is about 495.9929881618.

Adding to 122018761 its reverse (167810221), we get a palindrome (289828982).

The spelling of 122018761 in words is "one hundred twenty-two million, eighteen thousand, seven hundred sixty-one".