233020012121 has 4 divisors (see below), whose sum is σ = 250944628452. Its totient is φ = 215095395792.

The previous prime is 233020012081. The next prime is 233020012177. The reversal of 233020012121 is 121210020332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34063870096 + 198956142025 = 184564^2 + 446045^2 .

It is a cyclic number.

It is not a de Polignac number, because 233020012121 - 2¹⁰ = 233020011097 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 233020012121.

It is not an unprimeable number, because it can be changed into a prime (233020012921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8962308146 + ... + 8962308171.

It is an arithmetic number, because the mean of its divisors is an integer number (62736157113).

Almost surely, 2^233020012121 is an apocalyptic number.

It is an amenable number.

233020012121 is a deficient number, since it is larger than the sum of its proper divisors (17924616331).

233020012121 is a wasteful number, since it uses less digits than its factorization.

233020012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17924616330.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 233020012121 its reverse (121210020332), we get a palindrome (354230032453).

The spelling of 233020012121 in words is "two hundred thirty-three billion, twenty million, twelve thousand, one hundred twenty-one".