121333401257 has 2 divisors, whose sum is σ = 121333401258. Its totient is φ = 121333401256.

The previous prime is 121333401239. The next prime is 121333401323. The reversal of 121333401257 is 752104333121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78253908121 + 43079493136 = 279739^2 + 207556^2 .

It is a cyclic number.

It is not a de Polignac number, because 121333401257 - 2¹² = 121333397161 is a prime.

It is not a weakly prime, because it can be changed into another prime (121333409257) 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, 60666700628 + 60666700629.

It is an arithmetic number, because the mean of its divisors is an integer number (60666700629).

Almost surely, 2^121333401257 is an apocalyptic number.

It is an amenable number.

121333401257 is a deficient number, since it is larger than the sum of its proper divisors (1).

121333401257 is an equidigital number, since it uses as much as digits as its factorization.

121333401257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

Adding to 121333401257 its reverse (752104333121), we get a palindrome (873437734378).

The spelling of 121333401257 in words is "one hundred twenty-one billion, three hundred thirty-three million, four hundred one thousand, two hundred fifty-seven".