33130221332 has 24 divisors (see below), whose sum is σ = 62445848136. Its totient is φ = 15288882048.

The previous prime is 33130221323. The next prime is 33130221379. The reversal of 33130221332 is 23312203133.

It can be written as a sum of positive squares in 4 ways, for example, as 541306756 + 32588914576 = 23266^2 + 180524^2 .

It is a super-3 number, since 3×33130221332³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 33130221298 and 33130221307.

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, 408638 + ... + 482954.

It is an arithmetic number, because the mean of its divisors is an integer number (2601910339).

Almost surely, 2^33130221332 is an apocalyptic number.

It is an amenable number.

33130221332 is a deficient number, since it is larger than the sum of its proper divisors (29315626804).

33130221332 is a wasteful number, since it uses less digits than its factorization.

33130221332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82907 (or 82905 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 33130221332 its reverse (23312203133), we get a palindrome (56442424465).

The spelling of 33130221332 in words is "thirty-three billion, one hundred thirty million, two hundred twenty-one thousand, three hundred thirty-two".