1251552338011 has 2 divisors, whose sum is σ = 1251552338012. Its totient is φ = 1251552338010.

The previous prime is 1251552337967. The next prime is 1251552338033. The reversal of 1251552338011 is 1108332551521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1251552338011 - 2¹⁷ = 1251552206939 is a prime.

It is a super-2 number, since 2×1251552338011² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1251552338611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625776169005 + 625776169006.

It is an arithmetic number, because the mean of its divisors is an integer number (625776169006).

Almost surely, 2^{1251552338011} is an apocalyptic number.

1251552338011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251552338011 is an equidigital number, since it uses as much as digits as its factorization.

1251552338011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 37.

Adding to 1251552338011 its reverse (1108332551521), we get a palindrome (2359884889532).

The spelling of 1251552338011 in words is "one trillion, two hundred fifty-one billion, five hundred fifty-two million, three hundred thirty-eight thousand, eleven".