10240121587 has 2 divisors, whose sum is σ = 10240121588. Its totient is φ = 10240121586.

The previous prime is 10240121537. The next prime is 10240121599. The reversal of 10240121587 is 78512104201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10240121587 - 2¹⁹ = 10239597299 is a prime.

It is not a weakly prime, because it can be changed into another prime (10240121537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5120060793 + 5120060794.

It is an arithmetic number, because the mean of its divisors is an integer number (5120060794).

Almost surely, 2^10240121587 is an apocalyptic number.

10240121587 is a deficient number, since it is larger than the sum of its proper divisors (1).

10240121587 is an equidigital number, since it uses as much as digits as its factorization.

10240121587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 31.

Adding to 10240121587 its reverse (78512104201), we get a palindrome (88752225788).

The spelling of 10240121587 in words is "ten billion, two hundred forty million, one hundred twenty-one thousand, five hundred eighty-seven".