23244434431221 has 16 divisors (see below), whose sum is σ = 31007105970048. Its totient is φ = 15489027297600.

The previous prime is 23244434431201. The next prime is 23244434431291. The reversal of 23244434431221 is 12213443444232.

It is not a de Polignac number, because 23244434431221 - 2¹⁵ = 23244434398453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23244434431221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23244434431201) 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 15 ways as a sum of consecutive naturals, for example, 94524136 + ... + 94769726.

It is an arithmetic number, because the mean of its divisors is an integer number (1937944123128).

Almost surely, 2^{23244434431221} is an apocalyptic number.

It is an amenable number.

23244434431221 is a deficient number, since it is larger than the sum of its proper divisors (7762671538827).

23244434431221 is a wasteful number, since it uses less digits than its factorization.

23244434431221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260252.

The product of its digits is 442368, while the sum is 39.

Adding to 23244434431221 its reverse (12213443444232), we get a palindrome (35457877875453).

The spelling of 23244434431221 in words is "twenty-three trillion, two hundred forty-four billion, four hundred thirty-four million, four hundred thirty-one thousand, two hundred twenty-one".