3111212003321 has 4 divisors (see below), whose sum is σ = 3111222148944. Its totient is φ = 3111201857700.

The previous prime is 3111212003297. The next prime is 3111212003351. The reversal of 3111212003321 is 1233002121113.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-3111212003321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3111212003293 and 3111212003302.

It is not an unprimeable number, because it can be changed into a prime (3111212003351) 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, 4598015 + ... + 5231076.

It is an arithmetic number, because the mean of its divisors is an integer number (777805537236).

Almost surely, 2^{3111212003321} is an apocalyptic number.

It is an amenable number.

3111212003321 is a deficient number, since it is larger than the sum of its proper divisors (10145623).

3111212003321 is an equidigital number, since it uses as much as digits as its factorization.

3111212003321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10145622.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 3111212003321 its reverse (1233002121113), we get a palindrome (4344214124434).

The spelling of 3111212003321 in words is "three trillion, one hundred eleven billion, two hundred twelve million, three thousand, three hundred twenty-one".