110211001221 has 4 divisors (see below), whose sum is σ = 146948001632. Its totient is φ = 73474000812.

The previous prime is 110211001217. The next prime is 110211001223. The reversal of 110211001221 is 122100112011.

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 110211001221 - 2² = 110211001217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110211001197 and 110211001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110211001223) 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, 18368500201 + ... + 18368500206.

It is an arithmetic number, because the mean of its divisors is an integer number (36737000408).

Almost surely, 2^110211001221 is an apocalyptic number.

It is an amenable number.

110211001221 is a deficient number, since it is larger than the sum of its proper divisors (36737000411).

110211001221 is an equidigital number, since it uses as much as digits as its factorization.

110211001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36737000410.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 110211001221 its reverse (122100112011), we get a palindrome (232311113232).

The spelling of 110211001221 in words is "one hundred ten billion, two hundred eleven million, one thousand, two hundred twenty-one".