33003001220 has 24 divisors (see below), whose sum is σ = 79207203264. Its totient is φ = 11315314656.

The previous prime is 33003001193. The next prime is 33003001223. The reversal of 33003001220 is 2210030033.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 33003001195 and 33003001204.

It is not an unprimeable number, because it can be changed into a prime (33003001223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117867722 + ... + 117868001.

It is an arithmetic number, because the mean of its divisors is an integer number (3300300136).

Almost surely, 2^33003001220 is an apocalyptic number.

It is an amenable number.

33003001220 is an abundant number, since it is smaller than the sum of its proper divisors (46204202044).

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

33003001220 is a wasteful number, since it uses less digits than its factorization.

33003001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235735739 (or 235735737 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 33003001220 its reverse (2210030033), we get a palindrome (35213031253).

The spelling of 33003001220 in words is "thirty-three billion, three million, one thousand, two hundred twenty".