233212321121021 has 4 divisors (see below), whose sum is σ = 254413441222944. Its totient is φ = 212011201019100.

The previous prime is 233212321121009. The next prime is 233212321121027. The reversal of 233212321121021 is 120121123212332.

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.

It is a cyclic number.

It is not a de Polignac number, because 233212321121021 - 2³⁰ = 233211247379197 is a prime.

It is a super-2 number, since 2×233212321121021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233212321121027) 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, 10600560050945 + ... + 10600560050966.

It is an arithmetic number, because the mean of its divisors is an integer number (63603360305736).

Almost surely, 2^{233212321121021} is an apocalyptic number.

It is an amenable number.

233212321121021 is a deficient number, since it is larger than the sum of its proper divisors (21201120101923).

233212321121021 is a wasteful number, since it uses less digits than its factorization.

233212321121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21201120101922.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 233212321121021 its reverse (120121123212332), we get a palindrome (353333444333353).

The spelling of 233212321121021 in words is "two hundred thirty-three trillion, two hundred twelve billion, three hundred twenty-one million, one hundred twenty-one thousand, twenty-one".