1233212230221 has 4 divisors (see below), whose sum is σ = 1644282973632. Its totient is φ = 822141486812.

The previous prime is 1233212230193. The next prime is 1233212230241. The reversal of 1233212230221 is 1220322123321.

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 1233212230221 - 2⁵ = 1233212230189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1233212230191 and 1233212230200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233212230241) 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, 205535371701 + ... + 205535371706.

It is an arithmetic number, because the mean of its divisors is an integer number (411070743408).

Almost surely, 2^{1233212230221} is an apocalyptic number.

It is an amenable number.

1233212230221 is a deficient number, since it is larger than the sum of its proper divisors (411070743411).

1233212230221 is an equidigital number, since it uses as much as digits as its factorization.

1233212230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411070743410.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1233212230221 its reverse (1220322123321), we get a palindrome (2453534353542).

The spelling of 1233212230221 in words is "one trillion, two hundred thirty-three billion, two hundred twelve million, two hundred thirty thousand, two hundred twenty-one".