33545213220 has 48 divisors (see below), whose sum is σ = 93938035968. Its totient is φ = 8944300800.

The previous prime is 33545213113. The next prime is 33545213231. The reversal of 33545213220 is 2231254533.

It is a super-2 number, since 2×33545213220² (a number of 22 digits) contains 22 as substring.

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

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, 543792 + ... + 602328.

It is an arithmetic number, because the mean of its divisors is an integer number (1957042416).

Almost surely, 2^33545213220 is an apocalyptic number.

33545213220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33545213220 is an abundant number, since it is smaller than the sum of its proper divisors (60392822748).

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

33545213220 is a wasteful number, since it uses less digits than its factorization.

33545213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68100 (or 68098 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 33545213220 its reverse (2231254533), we get a palindrome (35776467753).

The spelling of 33545213220 in words is "thirty-three billion, five hundred forty-five million, two hundred thirteen thousand, two hundred twenty".