23424444121 has 16 divisors (see below), whose sum is σ = 25356044560. Its totient is φ = 21511526400.

The previous prime is 23424444097. The next prime is 23424444133. The reversal of 23424444121 is 12144442432.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5752464025 + 17671980096 = 75845^2 + 132936^2 .

It is not a de Polignac number, because 23424444121 - 2⁷ = 23424443993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23425444121) 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, 5573821 + ... + 5578021.

It is an arithmetic number, because the mean of its divisors is an integer number (1584752785).

Almost surely, 2^23424444121 is an apocalyptic number.

It is an amenable number.

23424444121 is a deficient number, since it is larger than the sum of its proper divisors (1931600439).

23424444121 is a wasteful number, since it uses less digits than its factorization.

23424444121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6316.

The product of its digits is 24576, while the sum is 31.

Adding to 23424444121 its reverse (12144442432), we get a palindrome (35568886553).

The spelling of 23424444121 in words is "twenty-three billion, four hundred twenty-four million, four hundred forty-four thousand, one hundred twenty-one".