33000023121 has 16 divisors (see below), whose sum is σ = 47665040640. Its totient is φ = 20307702480.

The previous prime is 33000023101. The next prime is 33000023131. The reversal of 33000023121 is 12132000033.

It is not a de Polignac number, because 33000023121 - 2¹⁸ = 32999760977 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 33000023121.

It is not an unprimeable number, because it can be changed into a prime (33000023101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2496825 + ... + 2510006.

It is an arithmetic number, because the mean of its divisors is an integer number (2979065040).

Almost surely, 2^33000023121 is an apocalyptic number.

It is an amenable number.

33000023121 is a deficient number, since it is larger than the sum of its proper divisors (14665017519).

33000023121 is an equidigital number, since it uses as much as digits as its factorization.

33000023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5006873 (or 5006847 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 33000023121 its reverse (12132000033), we get a palindrome (45132023154).

The spelling of 33000023121 in words is "thirty-three billion, twenty-three thousand, one hundred twenty-one".