1252121552351 has 2 divisors, whose sum is σ = 1252121552352. Its totient is φ = 1252121552350.

The previous prime is 1252121552287. The next prime is 1252121552459. The reversal of 1252121552351 is 1532551212521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1252121552351 - 2⁶ = 1252121552287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252121552051) 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, 626060776175 + 626060776176.

It is an arithmetic number, because the mean of its divisors is an integer number (626060776176).

Almost surely, 2^{1252121552351} is an apocalyptic number.

1252121552351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252121552351 is an equidigital number, since it uses as much as digits as its factorization.

1252121552351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30000, while the sum is 35.

Adding to 1252121552351 its reverse (1532551212521), we get a palindrome (2784672764872).

The spelling of 1252121552351 in words is "one trillion, two hundred fifty-two billion, one hundred twenty-one million, five hundred fifty-two thousand, three hundred fifty-one".