33013243212420 has 144 divisors (see below), whose sum is σ = 99962923959360. Its totient is φ = 8130397701888.

The previous prime is 33013243212403. The next prime is 33013243212421. The reversal of 33013243212420 is 2421234231033.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (33013243212421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17012554 + ... + 18853473.

It is an arithmetic number, because the mean of its divisors is an integer number (694186971940).

Almost surely, 2^{33013243212420} is an apocalyptic number.

33013243212420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33013243212420 is an abundant number, since it is smaller than the sum of its proper divisors (66949680746940).

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

33013243212420 is a wasteful number, since it uses less digits than its factorization.

33013243212420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35866114 (or 35866089 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 33013243212420 its reverse (2421234231033), we get a palindrome (35434477443453).

The spelling of 33013243212420 in words is "thirty-three trillion, thirteen billion, two hundred forty-three million, two hundred twelve thousand, four hundred twenty".