221312301123233 has 4 divisors (see below), whose sum is σ = 221312336376900. Its totient is φ = 221312265869568.

The previous prime is 221312301123161. The next prime is 221312301123313. The reversal of 221312301123233 is 332321103213122.

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 186578334159424 + 34733966963809 = 13659368^2 + 5893553^2 .

It is a cyclic number.

It is not a de Polignac number, because 221312301123233 - 2¹² = 221312301119137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221312301123196 and 221312301123205.

It is not an unprimeable number, because it can be changed into a prime (221312301120233) 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, 5368760 + ... + 21712857.

It is an arithmetic number, because the mean of its divisors is an integer number (55328084094225).

Almost surely, 2^{221312301123233} is an apocalyptic number.

It is an amenable number.

221312301123233 is a deficient number, since it is larger than the sum of its proper divisors (35253667).

221312301123233 is an equidigital number, since it uses as much as digits as its factorization.

221312301123233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35253666.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 221312301123233 its reverse (332321103213122), we get a palindrome (553633404336355).

The spelling of 221312301123233 in words is "two hundred twenty-one trillion, three hundred twelve billion, three hundred one million, one hundred twenty-three thousand, two hundred thirty-three".