33213205140 has 24 divisors (see below), whose sum is σ = 92996974560. Its totient is φ = 8856854688.

The previous prime is 33213205139. The next prime is 33213205163. The reversal of 33213205140 is 4150231233.

It is a super-2 number, since 2×33213205140² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33213205140.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276776650 + ... + 276776769.

It is an arithmetic number, because the mean of its divisors is an integer number (3874873940).

Almost surely, 2^33213205140 is an apocalyptic number.

33213205140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33213205140 is an abundant number, since it is smaller than the sum of its proper divisors (59783769420).

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

33213205140 is a wasteful number, since it uses less digits than its factorization.

33213205140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553553431 (or 553553429 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 33213205140 its reverse (4150231233), we get a palindrome (37363436373).

The spelling of 33213205140 in words is "thirty-three billion, two hundred thirteen million, two hundred five thousand, one hundred forty".