21100123311119 has 4 divisors (see below), whose sum is σ = 21218001095160. Its totient is φ = 20982245527080.

The previous prime is 21100123311053. The next prime is 21100123311181. The reversal of 21100123311119 is 91111332100112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21100123311119 - 2⁸ = 21100123310863 is a prime.

It is a super-2 number, since 2×21100123311119² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100123311019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58938891752 + ... + 58938892109.

It is an arithmetic number, because the mean of its divisors is an integer number (5304500273790).

Almost surely, 2^{21100123311119} is an apocalyptic number.

21100123311119 is a deficient number, since it is larger than the sum of its proper divisors (117877784041).

21100123311119 is a wasteful number, since it uses less digits than its factorization.

21100123311119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117877784040.

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 21100123311119 in words is "twenty-one trillion, one hundred billion, one hundred twenty-three million, three hundred eleven thousand, one hundred nineteen".