33012212440 has 16 divisors (see below), whose sum is σ = 74277478080. Its totient is φ = 13204884960.

The previous prime is 33012212411. The next prime is 33012212447. The reversal of 33012212440 is 4421221033.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33012212447) 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, 412652616 + ... + 412652695.

It is an arithmetic number, because the mean of its divisors is an integer number (4642342380).

Almost surely, 2^33012212440 is an apocalyptic number.

It is an amenable number.

33012212440 is an abundant number, since it is smaller than the sum of its proper divisors (41265265640).

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

33012212440 is a wasteful number, since it uses less digits than its factorization.

33012212440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825305322 (or 825305318 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 33012212440 its reverse (4421221033), we get a palindrome (37433433473).

The spelling of 33012212440 in words is "thirty-three billion, twelve million, two hundred twelve thousand, four hundred forty".