121122119857 has 2 divisors, whose sum is σ = 121122119858. Its totient is φ = 121122119856.

The previous prime is 121122119827. The next prime is 121122119863. The reversal of 121122119857 is 758911221121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120725671936 + 396447921 = 347456^2 + 19911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121122119857 is a prime.

It is not a weakly prime, because it can be changed into another prime (121122119827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561059928 + 60561059929.

It is an arithmetic number, because the mean of its divisors is an integer number (60561059929).

Almost surely, 2^121122119857 is an apocalyptic number.

It is an amenable number.

121122119857 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122119857 is an equidigital number, since it uses as much as digits as its factorization.

121122119857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 40.

The spelling of 121122119857 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred nineteen thousand, eight hundred fifty-seven".