122020111121 has 2 divisors, whose sum is σ = 122020111122. Its totient is φ = 122020111120.

The previous prime is 122020111093. The next prime is 122020111123. The reversal of 122020111121 is 121111020221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122002805521 + 17305600 = 349289^2 + 4160^2 .

It is a cyclic number.

It is not a de Polignac number, because 122020111121 - 2²² = 122015916817 is a prime.

Together with 122020111123, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 122020111096 and 122020111105.

It is not a weakly prime, because it can be changed into another prime (122020111123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010055560 + 61010055561.

It is an arithmetic number, because the mean of its divisors is an integer number (61010055561).

Almost surely, 2^122020111121 is an apocalyptic number.

It is an amenable number.

122020111121 is a deficient number, since it is larger than the sum of its proper divisors (1).

122020111121 is an equidigital number, since it uses as much as digits as its factorization.

122020111121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 122020111121 its reverse (121111020221), we get a palindrome (243131131342).

The spelling of 122020111121 in words is "one hundred twenty-two billion, twenty million, one hundred eleven thousand, one hundred twenty-one".