201111101010221 has 8 divisors (see below), whose sum is σ = 203250316403904. Its totient is φ = 198973230618240.

The previous prime is 201111101010187. The next prime is 201111101010251. The reversal of 201111101010221 is 122010101111102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201111101010221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201111101010196 and 201111101010205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111101010251) 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, 335949785 + ... + 336547886.

It is an arithmetic number, because the mean of its divisors is an integer number (25406289550488).

Almost surely, 2^{201111101010221} is an apocalyptic number.

It is an amenable number.

201111101010221 is a deficient number, since it is larger than the sum of its proper divisors (2139215393683).

201111101010221 is an equidigital number, since it uses as much as digits as its factorization.

201111101010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672500851.

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

Adding to 201111101010221 its reverse (122010101111102), we get a palindrome (323121202121323).

The spelling of 201111101010221 in words is "two hundred one trillion, one hundred eleven billion, one hundred one million, ten thousand, two hundred twenty-one".