110001012221 has 4 divisors (see below), whose sum is σ = 115790539200. Its totient is φ = 104211485244.

The previous prime is 110001012211. The next prime is 110001012227. The reversal of 110001012221 is 122210100011.

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 a de Polignac number, because none of the positive numbers 2^k-110001012221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110001012227) 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, 2894763461 + ... + 2894763498.

It is an arithmetic number, because the mean of its divisors is an integer number (28947634800).

Almost surely, 2^110001012221 is an apocalyptic number.

It is an amenable number.

110001012221 is a deficient number, since it is larger than the sum of its proper divisors (5789526979).

110001012221 is an equidigital number, since it uses as much as digits as its factorization.

110001012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5789526978.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 110001012221 its reverse (122210100011), we get a palindrome (232211112232).

The spelling of 110001012221 in words is "one hundred ten billion, one million, twelve thousand, two hundred twenty-one".