122121020201 has 4 divisors (see below), whose sum is σ = 122898861252. Its totient is φ = 121343179152.

The previous prime is 122121020183. The next prime is 122121020207. The reversal of 122121020201 is 102020121221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102020121221 = 83 ⋅1229158087.

It can be written as a sum of positive squares in 2 ways, for example, as 20541768976 + 101579251225 = 143324^2 + 318715^2 .

It is a cyclic number.

It is not a de Polignac number, because 122121020201 - 2¹⁰ = 122121019177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122121020207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388920290 + ... + 388920603.

It is an arithmetic number, because the mean of its divisors is an integer number (30724715313).

Almost surely, 2^122121020201 is an apocalyptic number.

It is an amenable number.

122121020201 is a deficient number, since it is larger than the sum of its proper divisors (777841051).

122121020201 is an equidigital number, since it uses as much as digits as its factorization.

122121020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777841050.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 122121020201 its reverse (102020121221), we get a palindrome (224141141422).

It can be divided in two parts, 122121020 and 201, that added together give a palindrome (122121221).

The spelling of 122121020201 in words is "one hundred twenty-two billion, one hundred twenty-one million, twenty thousand, two hundred one".