21044302111 has 16 divisors (see below), whose sum is σ = 25105042944. Its totient is φ = 17247710304.

The previous prime is 21044302063. The next prime is 21044302117. The reversal of 21044302111 is 11120344012.

It is not a de Polignac number, because 21044302111 - 2⁷ = 21044301983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21044302117) 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, 475165 + ... + 517561.

It is an arithmetic number, because the mean of its divisors is an integer number (1569065184).

Almost surely, 2^21044302111 is an apocalyptic number.

21044302111 is a deficient number, since it is larger than the sum of its proper divisors (4060740833).

21044302111 is a wasteful number, since it uses less digits than its factorization.

21044302111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45510.

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

Adding to 21044302111 its reverse (11120344012), we get a palindrome (32164646123).

The spelling of 21044302111 in words is "twenty-one billion, forty-four million, three hundred two thousand, one hundred eleven".