110111033211221 has 4 divisors (see below), whose sum is σ = 125841180812832. Its totient is φ = 94380885609612.

The previous prime is 110111033211187. The next prime is 110111033211229. The reversal of 110111033211221 is 122112330111011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 110111033211221 - 2¹⁰ = 110111033210197 is a prime.

It is a super-2 number, since 2×110111033211221² (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 = 110111033211193 and 110111033211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110111033211229) 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, 7865073800795 + ... + 7865073800808.

It is an arithmetic number, because the mean of its divisors is an integer number (31460295203208).

Almost surely, 2^{110111033211221} is an apocalyptic number.

It is an amenable number.

110111033211221 is a deficient number, since it is larger than the sum of its proper divisors (15730147601611).

110111033211221 is an equidigital number, since it uses as much as digits as its factorization.

110111033211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15730147601610.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 110111033211221 its reverse (122112330111011), we get a palindrome (232223363322232).

The spelling of 110111033211221 in words is "one hundred ten trillion, one hundred eleven billion, thirty-three million, two hundred eleven thousand, two hundred twenty-one".