1223244421 has 16 divisors (see below), whose sum is σ = 1414929024. Its totient is φ = 1035872064.

The previous prime is 1223244409. The next prime is 1223244433. The reversal of 1223244421 is 1244423221.

It is an interprime number because it is at equal distance from previous prime (1223244409) and next prime (1223244433).

It is a cyclic number.

It is not a de Polignac number, because 1223244421 - 2⁹ = 1223243909 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 (1223244461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194295 + ... + 200491.

It is an arithmetic number, because the mean of its divisors is an integer number (88433064).

Almost surely, 2^1223244421 is an apocalyptic number.

It is an amenable number.

1223244421 is a deficient number, since it is larger than the sum of its proper divisors (191684603).

1223244421 is a wasteful number, since it uses less digits than its factorization.

1223244421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6540.

The product of its digits is 3072, while the sum is 25.

The square root of 1223244421 is about 34974.9113079647. The cubic root of 1223244421 is about 1069.4760940027.

Adding to 1223244421 its reverse (1244423221), we get a palindrome (2467667642).

The spelling of 1223244421 in words is "one billion, two hundred twenty-three million, two hundred forty-four thousand, four hundred twenty-one".