122200121009 has 2 divisors, whose sum is σ = 122200121010. Its totient is φ = 122200121008.

The previous prime is 122200120967. The next prime is 122200121011. The reversal of 122200121009 is 900121002221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69049123984 + 53150997025 = 262772^2 + 230545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122200121009 is a prime.

It is a super-2 number, since 2×122200121009² (a number of 23 digits) contains 22 as substring.

Together with 122200121011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122200121039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61100060504 + 61100060505.

It is an arithmetic number, because the mean of its divisors is an integer number (61100060505).

Almost surely, 2^122200121009 is an apocalyptic number.

It is an amenable number.

122200121009 is a deficient number, since it is larger than the sum of its proper divisors (1).

122200121009 is an equidigital number, since it uses as much as digits as its factorization.

122200121009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 122200121009 in words is "one hundred twenty-two billion, two hundred million, one hundred twenty-one thousand, nine".