101011121211251 has 2 divisors, whose sum is σ = 101011121211252. Its totient is φ = 101011121211250.

The previous prime is 101011121211179. The next prime is 101011121211269. The reversal of 101011121211251 is 152112121110101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101011121211251 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (101011121211151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50505560605625 + 50505560605626.

It is an arithmetic number, because the mean of its divisors is an integer number (50505560605626).

Almost surely, 2^{101011121211251} is an apocalyptic number.

101011121211251 is a deficient number, since it is larger than the sum of its proper divisors (1).

101011121211251 is an equidigital number, since it uses as much as digits as its factorization.

101011121211251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 20.

Adding to 101011121211251 its reverse (152112121110101), we get a palindrome (253123242321352).

The spelling of 101011121211251 in words is "one hundred one trillion, eleven billion, one hundred twenty-one million, two hundred eleven thousand, two hundred fifty-one".