1221411210223 has 4 divisors (see below), whose sum is σ = 1221495523920. Its totient is φ = 1221326896528.

The previous prime is 1221411210211. The next prime is 1221411210269. The reversal of 1221411210223 is 3220121141221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1221411210223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1221411210194 and 1221411210203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221411210293) 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, 42135115 + ... + 42164092.

It is an arithmetic number, because the mean of its divisors is an integer number (305373880980).

Almost surely, 2^{1221411210223} is an apocalyptic number.

1221411210223 is a deficient number, since it is larger than the sum of its proper divisors (84313697).

1221411210223 is an equidigital number, since it uses as much as digits as its factorization.

1221411210223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84313696.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 1221411210223 its reverse (3220121141221), we get a palindrome (4441532351444).

The spelling of 1221411210223 in words is "one trillion, two hundred twenty-one billion, four hundred eleven million, two hundred ten thousand, two hundred twenty-three".