110211122221021 has 4 divisors (see below), whose sum is σ = 110764946956000. Its totient is φ = 109657297486044.

The previous prime is 110211122220959. The next prime is 110211122221087. The reversal of 110211122221021 is 120122221112011.

It is a happy number.

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 110211122221021 - 2¹¹ = 110211122218973 is a prime.

It is a super-2 number, since 2×110211122221021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 110211122221021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110211192221021) 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, 276912367191 + ... + 276912367588.

It is an arithmetic number, because the mean of its divisors is an integer number (27691236739000).

Almost surely, 2^{110211122221021} is an apocalyptic number.

It is an amenable number.

110211122221021 is a deficient number, since it is larger than the sum of its proper divisors (553824734979).

110211122221021 is an equidigital number, since it uses as much as digits as its factorization.

110211122221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553824734978.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 110211122221021 its reverse (120122221112011), we get a palindrome (230333343333032).

The spelling of 110211122221021 in words is "one hundred ten trillion, two hundred eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, twenty-one".