33313220221212 has 48 divisors (see below), whose sum is σ = 88701867666720. Its totient is φ = 10804287638016.

The previous prime is 33313220221199. The next prime is 33313220221271. The reversal of 33313220221212 is 21212202231333.

33313220221212 is a `hidden beast` number, since 3 + 3 + 3 + 1 + 3 + 220 + 221 + 212 = 666.

It is a super-2 number, since 2×33313220221212² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4168316853 + ... + 4168324844.

It is an arithmetic number, because the mean of its divisors is an integer number (1847955576390).

Almost surely, 2^{33313220221212} is an apocalyptic number.

It is an amenable number.

33313220221212 is an abundant number, since it is smaller than the sum of its proper divisors (55388647445508).

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

33313220221212 is a wasteful number, since it uses less digits than its factorization.

33313220221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8336641747 (or 8336641739 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 33313220221212 its reverse (21212202231333), we get a palindrome (54525422452545).

The spelling of 33313220221212 in words is "thirty-three trillion, three hundred thirteen billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twelve".