3311221212 has 36 divisors (see below), whose sum is σ = 9013881240. Its totient is φ = 1018837152.

The previous prime is 3311221201. The next prime is 3311221301. The reversal of 3311221212 is 2121221133.

3311221212 is a `hidden beast` number, since 331 + 122 + 1 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3537162 + ... + 3538097.

It is an arithmetic number, because the mean of its divisors is an integer number (250385590).

Almost surely, 2^3311221212 is an apocalyptic number.

It is an amenable number.

3311221212 is an abundant number, since it is smaller than the sum of its proper divisors (5702660028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3311221212 is a wasteful number, since it uses less digits than its factorization.

3311221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7075282 (or 7075277 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 3311221212 is about 57543.2116934743. The cubic root of 3311221212 is about 1490.4911390837.

Adding to 3311221212 its reverse (2121221133), we get a palindrome (5432442345).

The spelling of 3311221212 in words is "three billion, three hundred eleven million, two hundred twenty-one thousand, two hundred twelve".