1221265325433 has 8 divisors (see below), whose sum is σ = 1628842628896. Its totient is φ = 813932452800.

The previous prime is 1221265325419. The next prime is 1221265325443. The reversal of 1221265325433 is 3345235621221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1221265325433 - 2⁹ = 1221265324921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1221265325391 and 1221265325400.

It is not an unprimeable number, because it can be changed into a prime (1221265325443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61096048 + ... + 61116033.

It is an arithmetic number, because the mean of its divisors is an integer number (203605328612).

Almost surely, 2^{1221265325433} is an apocalyptic number.

It is an amenable number.

1221265325433 is a deficient number, since it is larger than the sum of its proper divisors (407577303463).

1221265325433 is a wasteful number, since it uses less digits than its factorization.

1221265325433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122215415.

The product of its digits is 259200, while the sum is 39.

The spelling of 1221265325433 in words is "one trillion, two hundred twenty-one billion, two hundred sixty-five million, three hundred twenty-five thousand, four hundred thirty-three".