3313311221 has 4 divisors (see below), whose sum is σ = 3614521344. Its totient is φ = 3012101100.

The previous prime is 3313311191. The next prime is 3313311233. The reversal of 3313311221 is 1221133133.

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-3313311221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3313311193 and 3313311202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3313331221) 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, 150605045 + ... + 150605066.

It is an arithmetic number, because the mean of its divisors is an integer number (903630336).

Almost surely, 2^3313311221 is an apocalyptic number.

It is an amenable number.

3313311221 is a deficient number, since it is larger than the sum of its proper divisors (301210123).

3313311221 is a wasteful number, since it uses less digits than its factorization.

3313311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301210122.

The product of its digits is 324, while the sum is 20.

The square root of 3313311221 is about 57561.3691723885. The cubic root of 3313311221 is about 1490.8046673874.

Adding to 3313311221 its reverse (1221133133), we get a palindrome (4534444354).

It can be divided in two parts, 33133112 and 21, that added together give a palindrome (33133133).

The spelling of 3313311221 in words is "three billion, three hundred thirteen million, three hundred eleven thousand, two hundred twenty-one".