122121413 has 2 divisors, whose sum is σ = 122121414. Its totient is φ = 122121412.

The previous prime is 122121383. The next prime is 122121437. The reversal of 122121413 is 314121221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99062209 + 23059204 = 9953^2 + 4802^2 .

It is a cyclic number.

It is not a de Polignac number, because 122121413 - 2¹⁰ = 122120389 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122121391 and 122121400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122121613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060706 + 61060707.

It is an arithmetic number, because the mean of its divisors is an integer number (61060707).

Almost surely, 2^122121413 is an apocalyptic number.

It is an amenable number.

122121413 is a deficient number, since it is larger than the sum of its proper divisors (1).

122121413 is an equidigital number, since it uses as much as digits as its factorization.

122121413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 17.

The square root of 122121413 is about 11050.8557587184. The cubic root of 122121413 is about 496.1320389128.

Adding to 122121413 its reverse (314121221), we get a palindrome (436242634).

The spelling of 122121413 in words is "one hundred twenty-two million, one hundred twenty-one thousand, four hundred thirteen".