21110000011101 has 16 divisors (see below), whose sum is σ = 31363684632000. Its totient is φ = 14033008597104.

The previous prime is 21110000011069. The next prime is 21110000011109. The reversal of 21110000011101 is 10111000001112.

It is not a de Polignac number, because 21110000011101 - 2⁵ = 21110000011069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110000011109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1120122171 + ... + 1120141016.

It is an arithmetic number, because the mean of its divisors is an integer number (1960230289500).

Almost surely, 2^{21110000011101} is an apocalyptic number.

It is an amenable number.

21110000011101 is a deficient number, since it is larger than the sum of its proper divisors (10253684620899).

21110000011101 is a wasteful number, since it uses less digits than its factorization.

21110000011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240263545 (or 2240263539 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 21110000011101 its reverse (10111000001112), we get a palindrome (31221000012213).

The spelling of 21110000011101 in words is "twenty-one trillion, one hundred ten billion, eleven thousand, one hundred one".