33012213331 has 4 divisors (see below), whose sum is σ = 33015502000. Its totient is φ = 33008924664.

The previous prime is 33012213319. The next prime is 33012213337. The reversal of 33012213331 is 13331221033.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33012213331 - 2¹⁹ = 33011689043 is a prime.

It is a super-2 number, since 2×33012213331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33012213337) 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, 1629231 + ... + 1649368.

It is an arithmetic number, because the mean of its divisors is an integer number (8253875500).

Almost surely, 2^33012213331 is an apocalyptic number.

33012213331 is a deficient number, since it is larger than the sum of its proper divisors (3288669).

33012213331 is a wasteful number, since it uses less digits than its factorization.

33012213331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288668.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 33012213331 its reverse (13331221033), we get a palindrome (46343434364).

The spelling of 33012213331 in words is "thirty-three billion, twelve million, two hundred thirteen thousand, three hundred thirty-one".