33332221221 has 16 divisors (see below), whose sum is σ = 47934096000. Its totient is φ = 20481088320.

The previous prime is 33332221199. The next prime is 33332221243. The reversal of 33332221221 is 12212223333.

It is an interprime number because it is at equal distance from previous prime (33332221199) and next prime (33332221243).

It is not a de Polignac number, because 33332221221 - 2⁷ = 33332221093 is a prime.

It is a super-2 number, since 2×33332221221² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33332221191 and 33332221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33332221121) 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, 620721 + ... + 672278.

It is an arithmetic number, because the mean of its divisors is an integer number (2995881000).

Almost surely, 2^33332221221 is an apocalyptic number.

It is an amenable number.

33332221221 is a deficient number, since it is larger than the sum of its proper divisors (14601874779).

33332221221 is a wasteful number, since it uses less digits than its factorization.

33332221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293676.

The product of its digits is 2592, while the sum is 24.

Adding to 33332221221 its reverse (12212223333), we get a palindrome (45544444554).

The spelling of 33332221221 in words is "thirty-three billion, three hundred thirty-two million, two hundred twenty-one thousand, two hundred twenty-one".