3311001221 has 16 divisors (see below), whose sum is σ = 3742084608. Its totient is φ = 2902305600.

The previous prime is 3311001193. The next prime is 3311001251. The reversal of 3311001221 is 1221001133.

It is a cyclic number.

It is not a de Polignac number, because 3311001221 - 2⁶ = 3311001157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3311001196 and 3311001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3311001251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76931 + ... + 111983.

It is an arithmetic number, because the mean of its divisors is an integer number (233880288).

Almost surely, 2^3311001221 is an apocalyptic number.

3311001221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3311001221 is a deficient number, since it is larger than the sum of its proper divisors (431083387).

3311001221 is a wasteful number, since it uses less digits than its factorization.

3311001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35372.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 3311001221 is about 57541.3001330349. The cubic root of 3311001221 is about 1490.4581299231.

Adding to 3311001221 its reverse (1221001133), we get a palindrome (4532002354).

The spelling of 3311001221 in words is "three billion, three hundred eleven million, one thousand, two hundred twenty-one".