122020222121 has 4 divisors (see below), whose sum is σ = 139451682432. Its totient is φ = 104588761812.

The previous prime is 122020222097. The next prime is 122020222123. The reversal of 122020222121 is 121222020221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121222020221 = 50231 ⋅2413291.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122020222121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122020222121.

It is not an unprimeable number, because it can be changed into a prime (122020222123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8715730145 + ... + 8715730158.

It is an arithmetic number, because the mean of its divisors is an integer number (34862920608).

Almost surely, 2^122020222121 is an apocalyptic number.

It is an amenable number.

122020222121 is a deficient number, since it is larger than the sum of its proper divisors (17431460311).

122020222121 is an equidigital number, since it uses as much as digits as its factorization.

122020222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17431460310.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 122020222121 its reverse (121222020221), we get a palindrome (243242242342).

The spelling of 122020222121 in words is "one hundred twenty-two billion, twenty million, two hundred twenty-two thousand, one hundred twenty-one".