10121100111251 has 2 divisors, whose sum is σ = 10121100111252. Its totient is φ = 10121100111250.

The previous prime is 10121100111247. The next prime is 10121100111307. The reversal of 10121100111251 is 15211100112101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10121100111251 - 2² = 10121100111247 is a prime.

It is not a weakly prime, because it can be changed into another prime (10121100111211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060550055625 + 5060550055626.

It is an arithmetic number, because the mean of its divisors is an integer number (5060550055626).

Almost surely, 2^{10121100111251} is an apocalyptic number.

10121100111251 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121100111251 is an equidigital number, since it uses as much as digits as its factorization.

10121100111251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 17.

Adding to 10121100111251 its reverse (15211100112101), we get a palindrome (25332200223352).

The spelling of 10121100111251 in words is "ten trillion, one hundred twenty-one billion, one hundred million, one hundred eleven thousand, two hundred fifty-one".