121120777 has 2 divisors, whose sum is σ = 121120778. Its totient is φ = 121120776.

The previous prime is 121120717. The next prime is 121120781. The reversal of 121120777 is 777021121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121088016 + 32761 = 11004^2 + 181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121120777 is a prime.

It is not a weakly prime, because it can be changed into another prime (121120717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560388 + 60560389.

It is an arithmetic number, because the mean of its divisors is an integer number (60560389).

Almost surely, 2^121120777 is an apocalyptic number.

It is an amenable number.

121120777 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120777 is an equidigital number, since it uses as much as digits as its factorization.

121120777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1372, while the sum is 28.

The square root of 121120777 is about 11005.4884943832. The cubic root of 121120777 is about 494.7732553320.

Adding to 121120777 its reverse (777021121), we get a palindrome (898141898).

The spelling of 121120777 in words is "one hundred twenty-one million, one hundred twenty thousand, seven hundred seventy-seven".