21134100111 has 8 divisors (see below), whose sum is σ = 28495416240. Its totient is φ = 13931092032.

The previous prime is 21134100101. The next prime is 21134100131. The reversal of 21134100111 is 11100143112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21134100111 - 2⁶ = 21134100047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21134100101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39576700 + ... + 39577233.

It is an arithmetic number, because the mean of its divisors is an integer number (3561927030).

Almost surely, 2^21134100111 is an apocalyptic number.

21134100111 is a deficient number, since it is larger than the sum of its proper divisors (7361316129).

21134100111 is an equidigital number, since it uses as much as digits as its factorization.

21134100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79154025.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21134100111 its reverse (11100143112), we get a palindrome (32234243223).

The spelling of 21134100111 in words is "twenty-one billion, one hundred thirty-four million, one hundred thousand, one hundred eleven".