110111001011221 has 4 divisors (see below), whose sum is σ = 125841144012832. Its totient is φ = 94380858009612.

The previous prime is 110111001011203. The next prime is 110111001011233. The reversal of 110111001011221 is 122110100111011.

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 a cyclic number.

It is not a de Polignac number, because 110111001011221 - 2²³ = 110110992622613 is a prime.

It is a super-2 number, since 2×110111001011221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110111001011261) 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, 7865071500795 + ... + 7865071500808.

It is an arithmetic number, because the mean of its divisors is an integer number (31460286003208).

Almost surely, 2^{110111001011221} is an apocalyptic number.

It is an amenable number.

110111001011221 is a deficient number, since it is larger than the sum of its proper divisors (15730143001611).

110111001011221 is an equidigital number, since it uses as much as digits as its factorization.

110111001011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15730143001610.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 110111001011221 its reverse (122110100111011), we get a palindrome (232221101122232).

The spelling of 110111001011221 in words is "one hundred ten trillion, one hundred eleven billion, one million, eleven thousand, two hundred twenty-one".