332212121 has 4 divisors (see below), whose sum is σ = 339280512. Its totient is φ = 325143732.

The previous prime is 332212091. The next prime is 332212163. The reversal of 332212121 is 121212233.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121212233 = 9319 ⋅13007.

It is a cyclic number.

It is not a de Polignac number, because 332212121 - 2⁶ = 332212057 is a prime.

It is a super-2 number, since 2×332212121² = 220729786678637282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 332212121.

It is not an unprimeable number, because it can be changed into a prime (332212171) 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, 3534125 + ... + 3534218.

It is an arithmetic number, because the mean of its divisors is an integer number (84820128).

Almost surely, 2^332212121 is an apocalyptic number.

It is an amenable number.

332212121 is a deficient number, since it is larger than the sum of its proper divisors (7068391).

332212121 is an equidigital number, since it uses as much as digits as its factorization.

332212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7068390.

The product of its digits is 144, while the sum is 17.

The square root of 332212121 is about 18226.6870549752. The cubic root of 332212121 is about 692.5829958696.

Adding to 332212121 its reverse (121212233), we get a palindrome (453424354).

The spelling of 332212121 in words is "three hundred thirty-two million, two hundred twelve thousand, one hundred twenty-one".