33112133021 has 4 divisors (see below), whose sum is σ = 36122326944. Its totient is φ = 30101939100.

The previous prime is 33112132931. The next prime is 33112133083. The reversal of 33112133021 is 12033121133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12033121133 = 11 ⋅1093920103.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33112133021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33112132984 and 33112133002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33112133221) 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, 1505096945 + ... + 1505096966.

It is an arithmetic number, because the mean of its divisors is an integer number (9030581736).

Almost surely, 2^33112133021 is an apocalyptic number.

It is an amenable number.

33112133021 is a deficient number, since it is larger than the sum of its proper divisors (3010193923).

33112133021 is a wasteful number, since it uses less digits than its factorization.

33112133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010193922.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 33112133021 its reverse (12033121133), we get a palindrome (45145254154).

The spelling of 33112133021 in words is "thirty-three billion, one hundred twelve million, one hundred thirty-three thousand, twenty-one".