110111010012221 has 4 divisors (see below), whose sum is σ = 116588128248252. Its totient is φ = 103633891776192.

The previous prime is 110111010012217. The next prime is 110111010012271. The reversal of 110111010012221 is 122210010111011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32983358416996 + 77127651595225 = 5743114^2 + 8782235^2 .

It is a cyclic number.

It is not a de Polignac number, because 110111010012221 - 2² = 110111010012217 is a prime.

It is a super-2 number, since 2×110111010012221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110111010012196 and 110111010012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110111010012271) 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, 3238559117990 + ... + 3238559118023.

It is an arithmetic number, because the mean of its divisors is an integer number (29147032062063).

Almost surely, 2^{110111010012221} is an apocalyptic number.

It is an amenable number.

110111010012221 is a deficient number, since it is larger than the sum of its proper divisors (6477118236031).

110111010012221 is an equidigital number, since it uses as much as digits as its factorization.

110111010012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6477118236030.

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

Adding to 110111010012221 its reverse (122210010111011), we get a palindrome (232321020123232).

The spelling of 110111010012221 in words is "one hundred ten trillion, one hundred eleven billion, ten million, twelve thousand, two hundred twenty-one".