33101021221 has 8 divisors (see below), whose sum is σ = 33954278400. Its totient is φ = 32249950560.

The previous prime is 33101021207. The next prime is 33101021227. The reversal of 33101021221 is 12212010133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-33101021221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33101021195 and 33101021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33101021227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515941 + ... + 576538.

It is an arithmetic number, because the mean of its divisors is an integer number (4244284800).

Almost surely, 2^33101021221 is an apocalyptic number.

It is an amenable number.

33101021221 is a deficient number, since it is larger than the sum of its proper divisors (853257179).

33101021221 is a wasteful number, since it uses less digits than its factorization.

33101021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093259.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 33101021221 its reverse (12212010133), we get a palindrome (45313031354).

The spelling of 33101021221 in words is "thirty-three billion, one hundred one million, twenty-one thousand, two hundred twenty-one".