20104320111 has 32 divisors (see below), whose sum is σ = 28299837888. Its totient is φ = 12678312960.

The previous prime is 20104320107. The next prime is 20104320133. The reversal of 20104320111 is 11102340102.

It is not a de Polignac number, because 20104320111 - 2² = 20104320107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104320101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1325905 + ... + 1340981.

It is an arithmetic number, because the mean of its divisors is an integer number (884369934).

Almost surely, 2^20104320111 is an apocalyptic number.

20104320111 is a deficient number, since it is larger than the sum of its proper divisors (8195517777).

20104320111 is a wasteful number, since it uses less digits than its factorization.

20104320111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15451.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20104320111 its reverse (11102340102), we get a palindrome (31206660213).

The spelling of 20104320111 in words is "twenty billion, one hundred four million, three hundred twenty thousand, one hundred eleven".