321100502145 has 16 divisors (see below), whose sum is σ = 517456927680. Its totient is φ = 170021559744.

The previous prime is 321100502117. The next prime is 321100502183. The reversal of 321100502145 is 541205001123.

It is a happy number.

It is not a de Polignac number, because 321100502145 - 2⁶ = 321100502081 is a prime.

It is a super-2 number, since 2×321100502145² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77000434 + ... + 77004603.

It is an arithmetic number, because the mean of its divisors is an integer number (32341057980).

Almost surely, 2^321100502145 is an apocalyptic number.

It is an amenable number.

321100502145 is a deficient number, since it is larger than the sum of its proper divisors (196356425535).

321100502145 is a wasteful number, since it uses less digits than its factorization.

321100502145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154005184.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 321100502145 its reverse (541205001123), we get a palindrome (862305503268).

The spelling of 321100502145 in words is "three hundred twenty-one billion, one hundred million, five hundred two thousand, one hundred forty-five".