23421213444 has 24 divisors (see below), whose sum is σ = 57025563840. Its totient is φ = 7467633184.

The previous prime is 23421213437. The next prime is 23421213499. The reversal of 23421213444 is 44431212432.

It is a super-2 number, since 2×23421213444² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42429459 + ... + 42430010.

It is an arithmetic number, because the mean of its divisors is an integer number (2376065160).

Almost surely, 2^23421213444 is an apocalyptic number.

It is an amenable number.

23421213444 is an abundant number, since it is smaller than the sum of its proper divisors (33604350396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23421213444 is a wasteful number, since it uses less digits than its factorization.

23421213444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84859499 (or 84859497 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

Adding to 23421213444 its reverse (44431212432), we get a palindrome (67852425876).

The spelling of 23421213444 in words is "twenty-three billion, four hundred twenty-one million, two hundred thirteen thousand, four hundred forty-four".