21111000110201 has 8 divisors (see below), whose sum is σ = 21123819440160. Its totient is φ = 21098181230208.

The previous prime is 21111000110173. The next prime is 21111000110209. The reversal of 21111000110201 is 10201100011112.

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

It is a cyclic number.

It is not a de Polignac number, because 21111000110201 - 2²² = 21110995915897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21111000110209) 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, 181091390 + ... + 181207928.

It is an arithmetic number, because the mean of its divisors is an integer number (2640477430020).

Almost surely, 2^{21111000110201} is an apocalyptic number.

It is an amenable number.

21111000110201 is a deficient number, since it is larger than the sum of its proper divisors (12819329959).

21111000110201 is a wasteful number, since it uses less digits than its factorization.

21111000110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224983.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 21111000110201 its reverse (10201100011112), we get a palindrome (31312100121313).

The spelling of 21111000110201 in words is "twenty-one trillion, one hundred eleven billion, one hundred ten thousand, two hundred one".