3251121224065 has 32 divisors (see below), whose sum is σ = 4853010589056. Its totient is φ = 2054184360960.

The previous prime is 3251121224027. The next prime is 3251121224069. The reversal of 3251121224065 is 5604221211523.

It is a happy number.

It is not a de Polignac number, because 3251121224065 - 2⁴¹ = 1052097968513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3251121224065.

It is not an unprimeable number, because it can be changed into a prime (3251121224069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133723807 + ... + 133748116.

It is an arithmetic number, because the mean of its divisors is an integer number (151656580908).

Almost surely, 2^{3251121224065} is an apocalyptic number.

It is an amenable number.

3251121224065 is a deficient number, since it is larger than the sum of its proper divisors (1601889364991).

3251121224065 is a wasteful number, since it uses less digits than its factorization.

3251121224065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267471969.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 3251121224065 its reverse (5604221211523), we get a palindrome (8855342435588).

The spelling of 3251121224065 in words is "three trillion, two hundred fifty-one billion, one hundred twenty-one million, two hundred twenty-four thousand, sixty-five".