122100200081 has 2 divisors, whose sum is σ = 122100200082. Its totient is φ = 122100200080.

The previous prime is 122100200071. The next prime is 122100200171. The reversal of 122100200081 is 180002001221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120724977025 + 1375223056 = 347455^2 + 37084^2 .

It is a cyclic number.

It is not a de Polignac number, because 122100200081 - 2³⁰ = 121026458257 is a prime.

It is a super-2 number, since 2×122100200081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122100200011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61050100040 + 61050100041.

It is an arithmetic number, because the mean of its divisors is an integer number (61050100041).

Almost surely, 2^122100200081 is an apocalyptic number.

It is an amenable number.

122100200081 is a deficient number, since it is larger than the sum of its proper divisors (1).

122100200081 is an equidigital number, since it uses as much as digits as its factorization.

122100200081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

The spelling of 122100200081 in words is "one hundred twenty-two billion, one hundred million, two hundred thousand, eighty-one".