233102021133221 has 4 divisors (see below), whose sum is σ = 233701255121100. Its totient is φ = 232502787145344.

The previous prime is 233102021133217. The next prime is 233102021133229. The reversal of 233102021133221 is 122331120201332.

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 172137391372996 + 60964629760225 = 13120114^2 + 7807985^2 .

It is a cyclic number.

It is not a de Polignac number, because 233102021133221 - 2² = 233102021133217 is a prime.

It is a super-5 number, since 5×233102021133221⁵ (a number of 73 digits) contains 55555 as substring. Note that it is a super-d number also for d = 4.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233102021133229) 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 3 ways as a sum of consecutive naturals, for example, 299616993356 + ... + 299616994133.

It is an arithmetic number, because the mean of its divisors is an integer number (58425313780275).

Almost surely, 2^{233102021133221} is an apocalyptic number.

It is an amenable number.

233102021133221 is a deficient number, since it is larger than the sum of its proper divisors (599233987879).

233102021133221 is an equidigital number, since it uses as much as digits as its factorization.

233102021133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599233987878.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 233102021133221 its reverse (122331120201332), we get a palindrome (355433141334553).

The spelling of 233102021133221 in words is "two hundred thirty-three trillion, one hundred two billion, twenty-one million, one hundred thirty-three thousand, two hundred twenty-one".