121644337 has 2 divisors, whose sum is σ = 121644338. Its totient is φ = 121644336.

The previous prime is 121644317. The next prime is 121644361. The reversal of 121644337 is 733446121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113976976 + 7667361 = 10676^2 + 2769^2 .

It is a cyclic number.

It is not a de Polignac number, because 121644337 - 2⁷ = 121644209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121644299 and 121644308.

It is not a weakly prime, because it can be changed into another prime (121644307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60822168 + 60822169.

It is an arithmetic number, because the mean of its divisors is an integer number (60822169).

Almost surely, 2^121644337 is an apocalyptic number.

It is an amenable number.

121644337 is a deficient number, since it is larger than the sum of its proper divisors (1).

121644337 is an equidigital number, since it uses as much as digits as its factorization.

121644337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 121644337 is about 11029.2491584876. The cubic root of 121644337 is about 495.4851374060.

The spelling of 121644337 in words is "one hundred twenty-one million, six hundred forty-four thousand, three hundred thirty-seven".