121150231457 has 2 divisors, whose sum is σ = 121150231458. Its totient is φ = 121150231456.

The previous prime is 121150231429. The next prime is 121150231471. The reversal of 121150231457 is 754132051121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87681724321 + 33468507136 = 296111^2 + 182944^2 .

It is an emirp because it is prime and its reverse (754132051121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121150231457 - 2⁶ = 121150231393 is a prime.

It is not a weakly prime, because it can be changed into another prime (121150231357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60575115728 + 60575115729.

It is an arithmetic number, because the mean of its divisors is an integer number (60575115729).

Almost surely, 2^121150231457 is an apocalyptic number.

It is an amenable number.

121150231457 is a deficient number, since it is larger than the sum of its proper divisors (1).

121150231457 is an equidigital number, since it uses as much as digits as its factorization.

121150231457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 32.

Adding to 121150231457 its reverse (754132051121), we get a palindrome (875282282578).

The spelling of 121150231457 in words is "one hundred twenty-one billion, one hundred fifty million, two hundred thirty-one thousand, four hundred fifty-seven".