1221434301223 has 8 divisors (see below), whose sum is σ = 1233771192000. Its totient is φ = 1209102184800.

The previous prime is 1221434301181. The next prime is 1221434301229. The reversal of 1221434301223 is 3221034341221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221434301223 - 2²⁵ = 1221400746791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1221434301191 and 1221434301200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221434301229) 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 7 ways as a sum of consecutive naturals, for example, 678223 + ... + 1703776.

It is an arithmetic number, because the mean of its divisors is an integer number (154221399000).

Almost surely, 2^{1221434301223} is an apocalyptic number.

1221434301223 is a deficient number, since it is larger than the sum of its proper divisors (12336890777).

1221434301223 is a wasteful number, since it uses less digits than its factorization.

1221434301223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387177.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1221434301223 its reverse (3221034341221), we get a palindrome (4442468642444).

The spelling of 1221434301223 in words is "one trillion, two hundred twenty-one billion, four hundred thirty-four million, three hundred one thousand, two hundred twenty-three".