33100123221 has 12 divisors (see below), whose sum is σ = 52157770080. Its totient is φ = 20060680680.

The previous prime is 33100123181. The next prime is 33100123223. The reversal of 33100123221 is 12232100133.

33100123221 is a `hidden beast` number, since 331 + 0 + 0 + 12 + 322 + 1 = 666.

It is not a de Polignac number, because 33100123221 - 2⁷ = 33100123093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33100123194 and 33100123203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33100123223) 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, 167172241 + ... + 167172438.

It is an arithmetic number, because the mean of its divisors is an integer number (4346480840).

Almost surely, 2^33100123221 is an apocalyptic number.

It is an amenable number.

33100123221 is a deficient number, since it is larger than the sum of its proper divisors (19057646859).

33100123221 is a wasteful number, since it uses less digits than its factorization.

33100123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334344696 (or 334344693 counting only the distinct ones).

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

Adding to 33100123221 its reverse (12232100133), we get a palindrome (45332223354).

The spelling of 33100123221 in words is "thirty-three billion, one hundred million, one hundred twenty-three thousand, two hundred twenty-one".