201110111001221 has 8 divisors (see below), whose sum is σ = 202163854579200. Its totient is φ = 200056375872160.

The previous prime is 201110111001209. The next prime is 201110111001253. The reversal of 201110111001221 is 122100111011102.

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 201110111001221 - 2²⁶ = 201110043892357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201110111001196 and 201110111001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201110111006221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48828590 + ... + 52786848.

It is an arithmetic number, because the mean of its divisors is an integer number (25270481822400).

Almost surely, 2^{201110111001221} is an apocalyptic number.

It is an amenable number.

201110111001221 is a deficient number, since it is larger than the sum of its proper divisors (1053743577979).

201110111001221 is a wasteful number, since it uses less digits than its factorization.

201110111001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224459.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 201110111001221 its reverse (122100111011102), we get a palindrome (323210222012323).

The spelling of 201110111001221 in words is "two hundred one trillion, one hundred ten billion, one hundred eleven million, one thousand, two hundred twenty-one".