21011101113 has 8 divisors (see below), whose sum is σ = 29489264800. Its totient is φ = 13270169088.

The previous prime is 21011101103. The next prime is 21011101127. The reversal of 21011101113 is 31110111012.

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

It is not a de Polignac number, because 21011101113 - 2¹² = 21011097017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21011101103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184307848 + ... + 184307961.

It is an arithmetic number, because the mean of its divisors is an integer number (3686158100).

Almost surely, 2^21011101113 is an apocalyptic number.

It is an amenable number.

21011101113 is a deficient number, since it is larger than the sum of its proper divisors (8478163687).

21011101113 is a wasteful number, since it uses less digits than its factorization.

21011101113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368615831.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 21011101113 its reverse (31110111012), we get a palindrome (52121212125).

The spelling of 21011101113 in words is "twenty-one billion, eleven million, one hundred one thousand, one hundred thirteen".