122100121189 has 2 divisors, whose sum is σ = 122100121190. Its totient is φ = 122100121188.

The previous prime is 122100121177. The next prime is 122100121219. The reversal of 122100121189 is 981121001221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89033608225 + 33066512964 = 298385^2 + 181842^2 .

It is a cyclic number.

It is not a de Polignac number, because 122100121189 - 2¹⁹ = 122099596901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122100121889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61050060594 + 61050060595.

It is an arithmetic number, because the mean of its divisors is an integer number (61050060595).

Almost surely, 2^122100121189 is an apocalyptic number.

It is an amenable number.

122100121189 is a deficient number, since it is larger than the sum of its proper divisors (1).

122100121189 is an equidigital number, since it uses as much as digits as its factorization.

122100121189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 28.

The spelling of 122100121189 in words is "one hundred twenty-two billion, one hundred million, one hundred twenty-one thousand, one hundred eighty-nine".