10012121387 has 2 divisors, whose sum is σ = 10012121388. Its totient is φ = 10012121386.

The previous prime is 10012121377. The next prime is 10012121401. The reversal of 10012121387 is 78312121001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10012121387 - 2⁸ = 10012121131 is a prime.

It is not a weakly prime, because it can be changed into another prime (10012121377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5006060693 + 5006060694.

It is an arithmetic number, because the mean of its divisors is an integer number (5006060694).

Almost surely, 2^10012121387 is an apocalyptic number.

10012121387 is a deficient number, since it is larger than the sum of its proper divisors (1).

10012121387 is an equidigital number, since it uses as much as digits as its factorization.

10012121387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 26.

Adding to 10012121387 its reverse (78312121001), we get a palindrome (88324242388).

The spelling of 10012121387 in words is "ten billion, twelve million, one hundred twenty-one thousand, three hundred eighty-seven".