33212200440 has 64 divisors (see below), whose sum is σ = 99649958400. Its totient is φ = 8855399552.

The previous prime is 33212200421. The next prime is 33212200451. The reversal of 33212200440 is 4400221233.

It is a super-2 number, since 2×33212200440² (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 15 ways as a sum of consecutive naturals, for example, 1227781 + ... + 1254539.

It is an arithmetic number, because the mean of its divisors is an integer number (1557030600).

Almost surely, 2^33212200440 is an apocalyptic number.

33212200440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33212200440 is an abundant number, since it is smaller than the sum of its proper divisors (66437757960).

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

33212200440 is a wasteful number, since it uses less digits than its factorization.

33212200440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37116 (or 37112 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 33212200440 its reverse (4400221233), we get a palindrome (37612421673).

The spelling of 33212200440 in words is "thirty-three billion, two hundred twelve million, two hundred thousand, four hundred forty".