2421012101257 has 2 divisors, whose sum is σ = 2421012101258. Its totient is φ = 2421012101256.

The previous prime is 2421012101161. The next prime is 2421012101269. The reversal of 2421012101257 is 7521012101242.

2421012101257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1703393029881 + 717619071376 = 1305141^2 + 847124^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421012101257 - 2¹⁹ = 2421011576969 is a prime.

It is a super-2 number, since 2×2421012101257² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2421012101297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210506050628 + 1210506050629.

It is an arithmetic number, because the mean of its divisors is an integer number (1210506050629).

Almost surely, 2^{2421012101257} is an apocalyptic number.

It is an amenable number.

2421012101257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421012101257 is an equidigital number, since it uses as much as digits as its factorization.

2421012101257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

Adding to 2421012101257 its reverse (7521012101242), we get a palindrome (9942024202499).

The spelling of 2421012101257 in words is "two trillion, four hundred twenty-one billion, twelve million, one hundred one thousand, two hundred fifty-seven".