121120057 has 2 divisors, whose sum is σ = 121120058. Its totient is φ = 121120056.

The previous prime is 121120009. The next prime is 121120061. The reversal of 121120057 is 750021121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121088016 + 32041 = 11004^2 + 179^2 .

It is an emirp because it is prime and its reverse (750021121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121120057 - 2²³ = 112731449 is a prime.

It is not a weakly prime, because it can be changed into another prime (121180057) 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, 60560028 + 60560029.

It is an arithmetic number, because the mean of its divisors is an integer number (60560029).

Almost surely, 2^121120057 is an apocalyptic number.

It is an amenable number.

121120057 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120057 is an equidigital number, since it uses as much as digits as its factorization.

121120057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 121120057 is about 11005.4557833831. The cubic root of 121120057 is about 494.7722749402.

Adding to 121120057 its reverse (750021121), we get a palindrome (871141178).

The spelling of 121120057 in words is "one hundred twenty-one million, one hundred twenty thousand, fifty-seven".