321012030002221 has 4 divisors (see below), whose sum is σ = 324128651652832. Its totient is φ = 317895408351612.

The previous prime is 321012030002141. The next prime is 321012030002267. The reversal of 321012030002221 is 122200030210123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 321012030002221 - 2⁷ = 321012030002093 is a prime.

It is a super-2 number, since 2×321012030002221² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321012030002291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1558310825151 + ... + 1558310825356.

It is an arithmetic number, because the mean of its divisors is an integer number (81032162913208).

Almost surely, 2^{321012030002221} is an apocalyptic number.

It is an amenable number.

321012030002221 is a deficient number, since it is larger than the sum of its proper divisors (3116621650611).

321012030002221 is a wasteful number, since it uses less digits than its factorization.

321012030002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116621650610.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 321012030002221 its reverse (122200030210123), we get a palindrome (443212060212344).

The spelling of 321012030002221 in words is "three hundred twenty-one trillion, twelve billion, thirty million, two thousand, two hundred twenty-one".