33021220110 has 128 divisors (see below), whose sum is σ = 81129185280. Its totient is φ = 8600424576.

The previous prime is 33021220109. The next prime is 33021220163. The reversal of 33021220110 is 1102212033.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 33021220110.

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 63 ways as a sum of consecutive naturals, for example, 125555839 + ... + 125556101.

It is an arithmetic number, because the mean of its divisors is an integer number (633821760).

Almost surely, 2^33021220110 is an apocalyptic number.

33021220110 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33021220110 is an abundant number, since it is smaller than the sum of its proper divisors (48107965170).

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

33021220110 is a wasteful number, since it uses less digits than its factorization.

33021220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 33021220110 its reverse (1102212033), we get a palindrome (34123432143).

The spelling of 33021220110 in words is "thirty-three billion, twenty-one million, two hundred twenty thousand, one hundred ten".