33203121213 has 16 divisors (see below), whose sum is σ = 44609818176. Its totient is φ = 21966034560.

The previous prime is 33203121157. The next prime is 33203121239. The reversal of 33203121213 is 31212130233.

It is not a de Polignac number, because 33203121213 - 2²⁰ = 33202072637 is a prime.

It is a super-2 number, since 2×33203121213² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33203121213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33203121313) 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, 1287223 + ... + 1312763.

It is an arithmetic number, because the mean of its divisors is an integer number (2788113636).

Almost surely, 2^33203121213 is an apocalyptic number.

It is an amenable number.

33203121213 is a deficient number, since it is larger than the sum of its proper divisors (11406696963).

33203121213 is a wasteful number, since it uses less digits than its factorization.

33203121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28844.

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

Adding to 33203121213 its reverse (31212130233), we get a palindrome (64415251446).

The spelling of 33203121213 in words is "thirty-three billion, two hundred three million, one hundred twenty-one thousand, two hundred thirteen".