332121123221 has 4 divisors (see below), whose sum is σ = 332356838700. Its totient is φ = 331885407744.

The previous prime is 332121123209. The next prime is 332121123287. The reversal of 332121123221 is 122321121233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122321121233 = 228521 ⋅535273.

It can be written as a sum of positive squares in 2 ways, for example, as 32380203025 + 299740920196 = 179945^2 + 547486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-332121123221 is a prime.

It is a super-2 number, since 2×332121123221² (a number of 24 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 (332121123121) 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, 117855626 + ... + 117858443.

It is an arithmetic number, because the mean of its divisors is an integer number (83089209675).

Almost surely, 2^332121123221 is an apocalyptic number.

It is an amenable number.

332121123221 is a deficient number, since it is larger than the sum of its proper divisors (235715479).

332121123221 is a wasteful number, since it uses less digits than its factorization.

332121123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235715478.

The product of its digits is 864, while the sum is 23.

Adding to 332121123221 its reverse (122321121233), we get a palindrome (454442244454).

The spelling of 332121123221 in words is "three hundred thirty-two billion, one hundred twenty-one million, one hundred twenty-three thousand, two hundred twenty-one".