33312213212 has 24 divisors (see below), whose sum is σ = 58397920896. Its totient is φ = 16627122288.

The previous prime is 33312213199. The next prime is 33312213223. The reversal of 33312213212 is 21231221333.

It is a super-2 number, since 2×33312213212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7323923 + ... + 7328469.

It is an arithmetic number, because the mean of its divisors is an integer number (2433246704).

Almost surely, 2^33312213212 is an apocalyptic number.

It is an amenable number.

33312213212 is a deficient number, since it is larger than the sum of its proper divisors (25085707684).

33312213212 is a wasteful number, since it uses less digits than its factorization.

33312213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7337 (or 7335 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

Adding to 33312213212 its reverse (21231221333), we get a palindrome (54543434545).

The spelling of 33312213212 in words is "thirty-three billion, three hundred twelve million, two hundred thirteen thousand, two hundred twelve".