1125153453321 has 16 divisors (see below), whose sum is σ = 1668773289600. Its totient is φ = 749256624144.

The previous prime is 1125153453317. The next prime is 1125153453427. The reversal of 1125153453321 is 1233543515211.

It is a happy number.

1125153453321 is a `hidden beast` number, since 1 + 1 + 2 + 51 + 53 + 4 + 533 + 21 = 666.

It is not a de Polignac number, because 1125153453321 - 2² = 1125153453317 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1125153457321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23466666 + ... + 23514563.

It is an arithmetic number, because the mean of its divisors is an integer number (104298330600).

Almost surely, 2^{1125153453321} is an apocalyptic number.

It is an amenable number.

1125153453321 is a deficient number, since it is larger than the sum of its proper divisors (543619836279).

1125153453321 is an equidigital number, since it uses as much as digits as its factorization.

1125153453321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46982125 (or 46982119 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

Adding to 1125153453321 its reverse (1233543515211), we get a palindrome (2358696968532).

The spelling of 1125153453321 in words is "one trillion, one hundred twenty-five billion, one hundred fifty-three million, four hundred fifty-three thousand, three hundred twenty-one".