33212013231 has 4 divisors (see below), whose sum is σ = 44282684312. Its totient is φ = 22141342152.

The previous prime is 33212013203. The next prime is 33212013239. The reversal of 33212013231 is 13231021233.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 33212013231 - 2⁵ = 33212013199 is a prime.

It is a super-2 number, since 2×33212013231² (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 = 33212013198 and 33212013207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33212013239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5535335536 + ... + 5535335541.

It is an arithmetic number, because the mean of its divisors is an integer number (11070671078).

Almost surely, 2^33212013231 is an apocalyptic number.

33212013231 is a deficient number, since it is larger than the sum of its proper divisors (11070671081).

33212013231 is a wasteful number, since it uses less digits than its factorization.

33212013231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11070671080.

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

Adding to 33212013231 its reverse (13231021233), we get a palindrome (46443034464).

The spelling of 33212013231 in words is "thirty-three billion, two hundred twelve million, thirteen thousand, two hundred thirty-one".