33232211221 has 16 divisors (see below), whose sum is σ = 36717327360. Its totient is φ = 29824971120.

The previous prime is 33232211171. The next prime is 33232211263. The reversal of 33232211221 is 12211223233.

It is a cyclic number.

It is not a de Polignac number, because 33232211221 - 2²³ = 33223822613 is a prime.

It is a super-2 number, since 2×33232211221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33232211192 and 33232211201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33232211291) 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, 1286410 + ... + 1311988.

It is an arithmetic number, because the mean of its divisors is an integer number (2294832960).

Almost surely, 2^33232211221 is an apocalyptic number.

It is an amenable number.

33232211221 is a deficient number, since it is larger than the sum of its proper divisors (3485116139).

33232211221 is a wasteful number, since it uses less digits than its factorization.

33232211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27096.

The product of its digits is 864, while the sum is 22.

Adding to 33232211221 its reverse (12211223233), we get a palindrome (45443434454).

The spelling of 33232211221 in words is "thirty-three billion, two hundred thirty-two million, two hundred eleven thousand, two hundred twenty-one".