121244777 has 2 divisors, whose sum is σ = 121244778. Its totient is φ = 121244776.

The previous prime is 121244713. The next prime is 121244807. The reversal of 121244777 is 777442121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74718736 + 46526041 = 8644^2 + 6821^2 .

It is a cyclic number.

It is not a de Polignac number, because 121244777 - 2⁶ = 121244713 is a prime.

It is a super-4 number, since 4×121244777⁴ (a number of 33 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121243777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60622388 + 60622389.

It is an arithmetic number, because the mean of its divisors is an integer number (60622389).

Almost surely, 2^121244777 is an apocalyptic number.

It is an amenable number.

121244777 is a deficient number, since it is larger than the sum of its proper divisors (1).

121244777 is an equidigital number, since it uses as much as digits as its factorization.

121244777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21952, while the sum is 35.

The square root of 121244777 is about 11011.1206060055. The cubic root of 121244777 is about 494.9420426650.

Adding to 121244777 its reverse (777442121), we get a palindrome (898686898).

The spelling of 121244777 in words is "one hundred twenty-one million, two hundred forty-four thousand, seven hundred seventy-seven".