111101010100221 has 8 divisors (see below), whose sum is σ = 148134891607360. Its totient is φ = 74067234329952.

The previous prime is 111101010100193. The next prime is 111101010100243. The reversal of 111101010100221 is 122001010101111.

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

It is not a de Polignac number, because 111101010100221 - 2²² = 111101005905917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111101010100197 and 111101010100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111101010100121) 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, 23949136 + ... + 28209273.

It is an arithmetic number, because the mean of its divisors is an integer number (18516861450920).

Almost surely, 2^{111101010100221} is an apocalyptic number.

It is an amenable number.

111101010100221 is a deficient number, since it is larger than the sum of its proper divisors (37033881507139).

111101010100221 is an equidigital number, since it uses as much as digits as its factorization.

111101010100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52868435.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111101010100221 its reverse (122001010101111), we get a palindrome (233102020201332).

The spelling of 111101010100221 in words is "one hundred eleven trillion, one hundred one billion, ten million, one hundred thousand, two hundred twenty-one".