33010220221 has 16 divisors (see below), whose sum is σ = 36093712320. Its totient is φ = 29940583680.

The previous prime is 33010220197. The next prime is 33010220233. The reversal of 33010220221 is 12202201033.

It is a cyclic number.

It is not a de Polignac number, because 33010220221 - 2²⁷ = 32876002493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33010220195 and 33010220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33010221221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13544215 + ... + 13546651.

It is an arithmetic number, because the mean of its divisors is an integer number (2255857020).

Almost surely, 2^33010220221 is an apocalyptic number.

It is an amenable number.

33010220221 is a deficient number, since it is larger than the sum of its proper divisors (3083492099).

33010220221 is a wasteful number, since it uses less digits than its factorization.

33010220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 33010220221 its reverse (12202201033), we get a palindrome (45212421254).

The spelling of 33010220221 in words is "thirty-three billion, ten million, two hundred twenty thousand, two hundred twenty-one".