33012131223 has 8 divisors (see below), whose sum is σ = 44092461808. Its totient is φ = 21969944064.

The previous prime is 33012131221. The next prime is 33012131279. The reversal of 33012131223 is 32213121033.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33012131223 - 2¹ = 33012131221 is a prime.

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 33012131223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33012131221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9533836 + ... + 9537297.

It is an arithmetic number, because the mean of its divisors is an integer number (5511557726).

Almost surely, 2^33012131223 is an apocalyptic number.

33012131223 is a deficient number, since it is larger than the sum of its proper divisors (11080330585).

33012131223 is a wasteful number, since it uses less digits than its factorization.

33012131223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19071713.

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

Adding to 33012131223 its reverse (32213121033), we get a palindrome (65225252256).

The spelling of 33012131223 in words is "thirty-three billion, twelve million, one hundred thirty-one thousand, two hundred twenty-three".