33231221103 has 16 divisors (see below), whose sum is σ = 46652614400. Its totient is φ = 20982602880.

The previous prime is 33231221083. The next prime is 33231221143. The reversal of 33231221103 is 30112213233.

It is not a de Polignac number, because 33231221103 - 2⁵ = 33231221071 is a prime.

It is a super-2 number, since 2×33231221103² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33231221103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33231221143) 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, 146718 + ... + 296628.

It is an arithmetic number, because the mean of its divisors is an integer number (2915788400).

Almost surely, 2^33231221103 is an apocalyptic number.

33231221103 is a deficient number, since it is larger than the sum of its proper divisors (13421393297).

33231221103 is a wasteful number, since it uses less digits than its factorization.

33231221103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153822.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 33231221103 its reverse (30112213233), we get a palindrome (63343434336).

The spelling of 33231221103 in words is "thirty-three billion, two hundred thirty-one million, two hundred twenty-one thousand, one hundred three".