1233200211221 has 4 divisors (see below), whose sum is σ = 1345309321344. Its totient is φ = 1121091101100.

The previous prime is 1233200211203. The next prime is 1233200211239. The reversal of 1233200211221 is 1221120023321.

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 an interprime number because it is at equal distance from previous prime (1233200211203) and next prime (1233200211239).

It is a cyclic number.

It is not a de Polignac number, because 1233200211221 - 2³⁴ = 1216020342037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1233200211193 and 1233200211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233200211421) 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, 56054555045 + ... + 56054555066.

It is an arithmetic number, because the mean of its divisors is an integer number (336327330336).

Almost surely, 2^{1233200211221} is an apocalyptic number.

1233200211221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1233200211221 is a deficient number, since it is larger than the sum of its proper divisors (112109110123).

1233200211221 is a wasteful number, since it uses less digits than its factorization.

1233200211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112109110122.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1233200211221 its reverse (1221120023321), we get a palindrome (2454320234542).

The spelling of 1233200211221 in words is "one trillion, two hundred thirty-three billion, two hundred million, two hundred eleven thousand, two hundred twenty-one".