1331252120053 has 4 divisors (see below), whose sum is σ = 1331254572480. Its totient is φ = 1331249667628.

The previous prime is 1331252120041. The next prime is 1331252120089. The reversal of 1331252120053 is 3500212521331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1331252120053 - 2¹⁷ = 1331251988981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331252120153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9613 + ... + 1631746.

It is an arithmetic number, because the mean of its divisors is an integer number (332813643120).

Almost surely, 2^{1331252120053} is an apocalyptic number.

It is an amenable number.

1331252120053 is a deficient number, since it is larger than the sum of its proper divisors (2452427).

1331252120053 is an equidigital number, since it uses as much as digits as its factorization.

1331252120053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452426.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 1331252120053 its reverse (3500212521331), we get a palindrome (4831464641384).

The spelling of 1331252120053 in words is "one trillion, three hundred thirty-one billion, two hundred fifty-two million, one hundred twenty thousand, fifty-three".