33103120221 has 12 divisors (see below), whose sum is σ = 47878792572. Its totient is φ = 22039589376.

The previous prime is 33103120217. The next prime is 33103120223. The reversal of 33103120221 is 12202130133.

33103120221 is a `hidden beast` number, since 331 + 0 + 312 + 0 + 2 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13611888900 + 19491231321 = 116670^2 + 139611^2 .

It is not a de Polignac number, because 33103120221 - 2² = 33103120217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33103120194 and 33103120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33103120223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2422596 + ... + 2436221.

It is an arithmetic number, because the mean of its divisors is an integer number (3989899381).

Almost surely, 2^33103120221 is an apocalyptic number.

It is an amenable number.

33103120221 is a deficient number, since it is larger than the sum of its proper divisors (14775672351).

33103120221 is a wasteful number, since it uses less digits than its factorization.

33103120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4859580 (or 4859577 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 33103120221 its reverse (12202130133), we get a palindrome (45305250354).

The spelling of 33103120221 in words is "thirty-three billion, one hundred three million, one hundred twenty thousand, two hundred twenty-one".