121226617 has 2 divisors, whose sum is σ = 121226618. Its totient is φ = 121226616.

The previous prime is 121226603. The next prime is 121226657. The reversal of 121226617 is 716622121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94848121 + 26378496 = 9739^2 + 5136^2 .

It is a cyclic number.

It is not a de Polignac number, because 121226617 - 2²³ = 112838009 is a prime.

It is not a weakly prime, because it can be changed into another prime (121226657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60613308 + 60613309.

It is an arithmetic number, because the mean of its divisors is an integer number (60613309).

Almost surely, 2^121226617 is an apocalyptic number.

It is an amenable number.

121226617 is a deficient number, since it is larger than the sum of its proper divisors (1).

121226617 is an equidigital number, since it uses as much as digits as its factorization.

121226617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 121226617 is about 11010.2959542421. The cubic root of 121226617 is about 494.9173306829.

Adding to 121226617 its reverse (716622121), we get a palindrome (837848738).

The spelling of 121226617 in words is "one hundred twenty-one million, two hundred twenty-six thousand, six hundred seventeen".