122212021121 has 2 divisors, whose sum is σ = 122212021122. Its totient is φ = 122212021120.

The previous prime is 122212021117. The next prime is 122212021159. The reversal of 122212021121 is 121120212221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109253386225 + 12958634896 = 330535^2 + 113836^2 .

It is a cyclic number.

It is not a de Polignac number, because 122212021121 - 2² = 122212021117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122212021121.

It is not a weakly prime, because it can be changed into another prime (122212020121) 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 as a sum of consecutive naturals, namely, 61106010560 + 61106010561.

It is an arithmetic number, because the mean of its divisors is an integer number (61106010561).

Almost surely, 2^122212021121 is an apocalyptic number.

It is an amenable number.

122212021121 is a deficient number, since it is larger than the sum of its proper divisors (1).

122212021121 is an equidigital number, since it uses as much as digits as its factorization.

122212021121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 122212021121 its reverse (121120212221), we get a palindrome (243332233342).

The spelling of 122212021121 in words is "one hundred twenty-two billion, two hundred twelve million, twenty-one thousand, one hundred twenty-one".