233121021306 has 16 divisors (see below), whose sum is σ = 471048662784. Its totient is φ = 76905903744.

The previous prime is 233121021269. The next prime is 233121021313. The reversal of 233121021306 is 603120121332.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200275210 + ... + 200276373.

It is an arithmetic number, because the mean of its divisors is an integer number (29440541424).

Almost surely, 2^233121021306 is an apocalyptic number.

233121021306 is an abundant number, since it is smaller than the sum of its proper divisors (237927641478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

233121021306 is a wasteful number, since it uses less digits than its factorization.

233121021306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400551685.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 233121021306 its reverse (603120121332), we get a palindrome (836241142638).

The spelling of 233121021306 in words is "two hundred thirty-three billion, one hundred twenty-one million, twenty-one thousand, three hundred six".