1223430343221 has 32 divisors (see below), whose sum is σ = 1676226280960. Its totient is φ = 793294254144.

The previous prime is 1223430343169. The next prime is 1223430343231.

It is a happy number.

1223430343221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1223430343221 - 2³⁸ = 948552436277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223430343231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31417455 + ... + 31456371.

It is an arithmetic number, because the mean of its divisors is an integer number (52382071280).

Almost surely, 2^{1223430343221} is an apocalyptic number.

It is an amenable number.

1223430343221 is a deficient number, since it is larger than the sum of its proper divisors (452795937739).

1223430343221 is a wasteful number, since it uses less digits than its factorization.

1223430343221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39985.

The product of its (nonzero) digits is 20736, while the sum is 30.

It can be divided in two parts, 1223430 and 343221, that added together give a palindrome (1566651).

The spelling of 1223430343221 in words is "one trillion, two hundred twenty-three billion, four hundred thirty million, three hundred forty-three thousand, two hundred twenty-one".