122111440013 has 2 divisors, whose sum is σ = 122111440014. Its totient is φ = 122111440012.

The previous prime is 122111439971. The next prime is 122111440063. The reversal of 122111440013 is 310044111221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119558967529 + 2552472484 = 345773^2 + 50522^2 .

It is a cyclic number.

It is not a de Polignac number, because 122111440013 - 2⁸ = 122111439757 is a prime.

It is a super-2 number, since 2×122111440013² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122111440063) 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, 61055720006 + 61055720007.

It is an arithmetic number, because the mean of its divisors is an integer number (61055720007).

Almost surely, 2^122111440013 is an apocalyptic number.

It is an amenable number.

122111440013 is a deficient number, since it is larger than the sum of its proper divisors (1).

122111440013 is an equidigital number, since it uses as much as digits as its factorization.

122111440013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 122111440013 its reverse (310044111221), we get a palindrome (432155551234).

The spelling of 122111440013 in words is "one hundred twenty-two billion, one hundred eleven million, four hundred forty thousand, thirteen".