21111130323 has 6 divisors (see below), whose sum is σ = 30493854924. Its totient is φ = 14074086876.

The previous prime is 21111130321. The next prime is 21111130333. The reversal of 21111130323 is 32303111112.

21111130323 is a `hidden beast` number, since 211 + 1 + 1 + 130 + 323 = 666.

It is not a de Polignac number, because 21111130323 - 2¹ = 21111130321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21111130296 and 21111130305.

It is not an unprimeable number, because it can be changed into a prime (21111130321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1172840565 + ... + 1172840582.

It is an arithmetic number, because the mean of its divisors is an integer number (5082309154).

Almost surely, 2^21111130323 is an apocalyptic number.

21111130323 is a deficient number, since it is larger than the sum of its proper divisors (9382724601).

21111130323 is a wasteful number, since it uses less digits than its factorization.

21111130323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345681153 (or 2345681150 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21111130323 its reverse (32303111112), we get a palindrome (53414241435).

The spelling of 21111130323 in words is "twenty-one billion, one hundred eleven million, one hundred thirty thousand, three hundred twenty-three".