3123302111221 has 4 divisors (see below), whose sum is σ = 3176239435200. Its totient is φ = 3070364787244.

The previous prime is 3123302111213. The next prime is 3123302111231. The reversal of 3123302111221 is 1221112033213.

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 3123302111221 - 2³ = 3123302111213 is a prime.

It is a super-2 number, since 2×3123302111221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3123302111192 and 3123302111201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123302111231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26468661901 + ... + 26468662018.

It is an arithmetic number, because the mean of its divisors is an integer number (794059858800).

Almost surely, 2^{3123302111221} is an apocalyptic number.

It is an amenable number.

3123302111221 is a deficient number, since it is larger than the sum of its proper divisors (52937323979).

3123302111221 is an equidigital number, since it uses as much as digits as its factorization.

3123302111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52937323978.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 3123302111221 its reverse (1221112033213), we get a palindrome (4344414144434).

The spelling of 3123302111221 in words is "three trillion, one hundred twenty-three billion, three hundred two million, one hundred eleven thousand, two hundred twenty-one".