122200311809 has 2 divisors, whose sum is σ = 122200311810. Its totient is φ = 122200311808.

The previous prime is 122200311799. The next prime is 122200311841. The reversal of 122200311809 is 908113002221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78028042225 + 44172269584 = 279335^2 + 210172^2 .

It is an emirp because it is prime and its reverse (908113002221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122200311809 is a prime.

It is not a weakly prime, because it can be changed into another prime (122200311509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61100155904 + 61100155905.

It is an arithmetic number, because the mean of its divisors is an integer number (61100155905).

Almost surely, 2^122200311809 is an apocalyptic number.

It is an amenable number.

122200311809 is a deficient number, since it is larger than the sum of its proper divisors (1).

122200311809 is an equidigital number, since it uses as much as digits as its factorization.

122200311809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 122200311809 in words is "one hundred twenty-two billion, two hundred million, three hundred eleven thousand, eight hundred nine".