321042222001145 has 4 divisors (see below), whose sum is σ = 385250666401380. Its totient is φ = 256833777600912.

The previous prime is 321042222001093. The next prime is 321042222001177. The reversal of 321042222001145 is 541100222240123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 235139039051536 + 85903182949609 = 15334244^2 + 9268397^2 .

It is a cyclic number.

It is not a de Polignac number, because 321042222001145 - 2²⁸ = 321041953565689 is a prime.

It is a super-2 number, since 2×321042222001145² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32104222200110 + ... + 32104222200119.

It is an arithmetic number, because the mean of its divisors is an integer number (96312666600345).

Almost surely, 2^{321042222001145} is an apocalyptic number.

It is an amenable number.

321042222001145 is a deficient number, since it is larger than the sum of its proper divisors (64208444400235).

321042222001145 is an equidigital number, since it uses as much as digits as its factorization.

321042222001145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64208444400234.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 321042222001145 its reverse (541100222240123), we get a palindrome (862142444241268).

The spelling of 321042222001145 in words is "three hundred twenty-one trillion, forty-two billion, two hundred twenty-two million, one thousand, one hundred forty-five".