21441333233441 has 16 divisors (see below), whose sum is σ = 23484108135168. Its totient is φ = 19414302230400.

The previous prime is 21441333233429. The next prime is 21441333233473. The reversal of 21441333233441 is 14433233314412.

It is not a de Polignac number, because 21441333233441 - 2¹⁸ = 21441332971297 is a prime.

It is a super-2 number, since 2×21441333233441² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21441333233395 and 21441333233404.

It is not an unprimeable number, because it can be changed into a prime (21441333233401) 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, 894665 + ... + 6609318.

It is an arithmetic number, because the mean of its divisors is an integer number (1467756758448).

Almost surely, 2^{21441333233441} is an apocalyptic number.

It is an amenable number.

21441333233441 is a deficient number, since it is larger than the sum of its proper divisors (2042774901727).

21441333233441 is a wasteful number, since it uses less digits than its factorization.

21441333233441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7505032.

The product of its digits is 248832, while the sum is 38.

Adding to 21441333233441 its reverse (14433233314412), we get a palindrome (35874566547853).

The spelling of 21441333233441 in words is "twenty-one trillion, four hundred forty-one billion, three hundred thirty-three million, two hundred thirty-three thousand, four hundred forty-one".