10121021211251 has 2 divisors, whose sum is σ = 10121021211252. Its totient is φ = 10121021211250.

The previous prime is 10121021211227. The next prime is 10121021211277. The reversal of 10121021211251 is 15211212012101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10121021211251 - 2¹⁰ = 10121021210227 is a prime.

It is not a weakly prime, because it can be changed into another prime (10121021211211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060510605625 + 5060510605626.

It is an arithmetic number, because the mean of its divisors is an integer number (5060510605626).

Almost surely, 2^{10121021211251} is an apocalyptic number.

10121021211251 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121021211251 is an equidigital number, since it uses as much as digits as its factorization.

10121021211251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 20.

Adding to 10121021211251 its reverse (15211212012101), we get a palindrome (25332233223352).

The spelling of 10121021211251 in words is "ten trillion, one hundred twenty-one billion, twenty-one million, two hundred eleven thousand, two hundred fifty-one".