120215232457 has 2 divisors, whose sum is σ = 120215232458. Its totient is φ = 120215232456.

The previous prime is 120215232433. The next prime is 120215232479. The reversal of 120215232457 is 754232512021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119373014016 + 842218441 = 345504^2 + 29021^2 .

It is an emirp because it is prime and its reverse (754232512021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120215232457 - 2¹¹ = 120215230409 is a prime.

It is a super-2 number, since 2×120215232457² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120215232407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60107616228 + 60107616229.

It is an arithmetic number, because the mean of its divisors is an integer number (60107616229).

Almost surely, 2^120215232457 is an apocalyptic number.

It is an amenable number.

120215232457 is a deficient number, since it is larger than the sum of its proper divisors (1).

120215232457 is an equidigital number, since it uses as much as digits as its factorization.

120215232457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 34.

Adding to 120215232457 its reverse (754232512021), we get a palindrome (874447744478).

The spelling of 120215232457 in words is "one hundred twenty billion, two hundred fifteen million, two hundred thirty-two thousand, four hundred fifty-seven".