321132123201021 has 32 divisors (see below), whose sum is σ = 478496729047680. Its totient is φ = 189877475788800.

The previous prime is 321132123201011. The next prime is 321132123201047. The reversal of 321132123201021 is 120102321231123.

It is not a de Polignac number, because 321132123201021 - 2¹⁷ = 321132123069949 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 321132123200982 and 321132123201000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321132123201011) 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, 277129125 + ... + 278285493.

It is an arithmetic number, because the mean of its divisors is an integer number (14953022782740).

Almost surely, 2^{321132123201021} is an apocalyptic number.

It is an amenable number.

321132123201021 is a deficient number, since it is larger than the sum of its proper divisors (157364605846659).

321132123201021 is a wasteful number, since it uses less digits than its factorization.

321132123201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361677.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 321132123201021 its reverse (120102321231123), we get a palindrome (441234444432144).

The spelling of 321132123201021 in words is "three hundred twenty-one trillion, one hundred thirty-two billion, one hundred twenty-three million, two hundred one thousand, twenty-one".