1012130021251 has 2 divisors, whose sum is σ = 1012130021252. Its totient is φ = 1012130021250.

The previous prime is 1012130021237. The next prime is 1012130021363. The reversal of 1012130021251 is 1521200312101.

It is a weak prime.

It is an emirp because it is prime and its reverse (1521200312101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012130021251 - 2¹¹ = 1012130019203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012130001251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506065010625 + 506065010626.

It is an arithmetic number, because the mean of its divisors is an integer number (506065010626).

Almost surely, 2^{1012130021251} is an apocalyptic number.

1012130021251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012130021251 is an equidigital number, since it uses as much as digits as its factorization.

1012130021251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 1012130021251 its reverse (1521200312101), we get a palindrome (2533330333352).

The spelling of 1012130021251 in words is "one trillion, twelve billion, one hundred thirty million, twenty-one thousand, two hundred fifty-one".