33212020213231 has 4 divisors (see below), whose sum is σ = 33212034084112. Its totient is φ = 33212006342352.

The previous prime is 33212020213181. The next prime is 33212020213247. The reversal of 33212020213231 is 13231202021233.

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

It is a cyclic number.

It is not a de Polignac number, because 33212020213231 - 2²⁹ = 33211483342319 is a prime.

It is a super-2 number, since 2×33212020213231² (a number of 28 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 = 33212020213196 and 33212020213205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33212020213291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2320086 + ... + 8473891.

It is an arithmetic number, because the mean of its divisors is an integer number (8303008521028).

Almost surely, 2^{33212020213231} is an apocalyptic number.

33212020213231 is a deficient number, since it is larger than the sum of its proper divisors (13870881).

33212020213231 is a wasteful number, since it uses less digits than its factorization.

33212020213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13870880.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 33212020213231 its reverse (13231202021233), we get a palindrome (46443222234464).

The spelling of 33212020213231 in words is "thirty-three trillion, two hundred twelve billion, twenty million, two hundred thirteen thousand, two hundred thirty-one".