21141443104 has 24 divisors (see below), whose sum is σ = 41735651328. Its totient is φ = 10541912640.

The previous prime is 21141443077. The next prime is 21141443123. The reversal of 21141443104 is 40134414112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888352 + ... + 911839.

It is an arithmetic number, because the mean of its divisors is an integer number (1738985472).

Almost surely, 2^21141443104 is an apocalyptic number.

It is an amenable number.

21141443104 is a deficient number, since it is larger than the sum of its proper divisors (20594208224).

21141443104 is a wasteful number, since it uses less digits than its factorization.

21141443104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800568 (or 1800560 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21141443104 its reverse (40134414112), we get a palindrome (61275857216).

The spelling of 21141443104 in words is "twenty-one billion, one hundred forty-one million, four hundred forty-three thousand, one hundred four".