121457362321 has 2 divisors, whose sum is σ = 121457362322. Its totient is φ = 121457362320.

The previous prime is 121457362277. The next prime is 121457362337. The reversal of 121457362321 is 123263754121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108333139600 + 13124222721 = 329140^2 + 114561^2 .

It is a cyclic number.

It is not a de Polignac number, because 121457362321 - 2¹³ = 121457354129 is a prime.

It is not a weakly prime, because it can be changed into another prime (121457362381) 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, 60728681160 + 60728681161.

It is an arithmetic number, because the mean of its divisors is an integer number (60728681161).

Almost surely, 2^121457362321 is an apocalyptic number.

It is an amenable number.

121457362321 is a deficient number, since it is larger than the sum of its proper divisors (1).

121457362321 is an equidigital number, since it uses as much as digits as its factorization.

121457362321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The spelling of 121457362321 in words is "one hundred twenty-one billion, four hundred fifty-seven million, three hundred sixty-two thousand, three hundred twenty-one".