21100011099 has 8 divisors (see below), whose sum is σ = 28335746880. Its totient is φ = 13965474696.

The previous prime is 21100011071. The next prime is 21100011143. The reversal of 21100011099 is 99011000112.

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

It is not a de Polignac number, because 21100011099 - 2⁸ = 21100010843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21100011019) 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, 25299357 + ... + 25300190.

It is an arithmetic number, because the mean of its divisors is an integer number (3541968360).

Almost surely, 2^21100011099 is an apocalyptic number.

21100011099 is a deficient number, since it is larger than the sum of its proper divisors (7235735781).

21100011099 is a wasteful number, since it uses less digits than its factorization.

21100011099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50599689.

The product of its (nonzero) digits is 162, while the sum is 24.

It can be divided in two parts, 2110001109 and 9, that multiplied together give a palindrome (18990009981).

The spelling of 21100011099 in words is "twenty-one billion, one hundred million, eleven thousand, ninety-nine".