21230043204044 has 6 divisors (see below), whose sum is σ = 37152575607084. Its totient is φ = 10615021602020.

The previous prime is 21230043204037. The next prime is 21230043204061. The reversal of 21230043204044 is 44040234003212.

It is a junction number, because it is equal to n+sod(n) for n = 21230043203998 and 21230043204016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2653755400502 + ... + 2653755400509.

It is an arithmetic number, because the mean of its divisors is an integer number (6192095934514).

Almost surely, 2^{21230043204044} is an apocalyptic number.

It is an amenable number.

21230043204044 is a deficient number, since it is larger than the sum of its proper divisors (15922532403040).

21230043204044 is a wasteful number, since it uses less digits than its factorization.

21230043204044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5307510801015 (or 5307510801013 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 21230043204044 its reverse (44040234003212), we get a palindrome (65270277207256).

The spelling of 21230043204044 in words is "twenty-one trillion, two hundred thirty billion, forty-three million, two hundred four thousand, forty-four".