21041311024 has 10 divisors (see below), whose sum is σ = 40767540140. Its totient is φ = 10520655504.

The previous prime is 21041310989. The next prime is 21041311063. The reversal of 21041311024 is 42011314012.

It is a junction number, because it is equal to n+sod(n) for n = 21041310992 and 21041311010.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657540954 + ... + 657540985.

It is an arithmetic number, because the mean of its divisors is an integer number (4076754014).

Almost surely, 2^21041311024 is an apocalyptic number.

It is an amenable number.

21041311024 is a deficient number, since it is larger than the sum of its proper divisors (19726229116).

21041311024 is a wasteful number, since it uses less digits than its factorization.

21041311024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315081947 (or 1315081941 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21041311024 its reverse (42011314012), we get a palindrome (63052625036).

The spelling of 21041311024 in words is "twenty-one billion, forty-one million, three hundred eleven thousand, twenty-four".