233123215056121 has 4 divisors (see below), whose sum is σ = 251055770060452. Its totient is φ = 215190660051792.

The previous prime is 233123215056119. The next prime is 233123215056139. The reversal of 233123215056121 is 121650512321332.

It is a happy number.

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 87878175440896 + 145245039615225 = 9374336^2 + 12051765^2 .

It is a cyclic number.

It is not a de Polignac number, because 233123215056121 - 2¹ = 233123215056119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233123215056521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8966277502146 + ... + 8966277502171.

It is an arithmetic number, because the mean of its divisors is an integer number (62763942515113).

Almost surely, 2^{233123215056121} is an apocalyptic number.

It is an amenable number.

233123215056121 is a deficient number, since it is larger than the sum of its proper divisors (17932555004331).

233123215056121 is a wasteful number, since it uses less digits than its factorization.

233123215056121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17932555004330.

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 233123215056121 its reverse (121650512321332), we get a palindrome (354773727377453).

The spelling of 233123215056121 in words is "two hundred thirty-three trillion, one hundred twenty-three billion, two hundred fifteen million, fifty-six thousand, one hundred twenty-one".