110121000221 has 2 divisors, whose sum is σ = 110121000222. Its totient is φ = 110121000220.

The previous prime is 110121000211. The next prime is 110121000247. The reversal of 110121000221 is 122000121011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108316024996 + 1804975225 = 329114^2 + 42485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110121000221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110121000211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55060500110 + 55060500111.

It is an arithmetic number, because the mean of its divisors is an integer number (55060500111).

Almost surely, 2^110121000221 is an apocalyptic number.

It is an amenable number.

110121000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

110121000221 is an equidigital number, since it uses as much as digits as its factorization.

110121000221 is an evil number, because the sum of its binary digits is even.

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

Adding to 110121000221 its reverse (122000121011), we get a palindrome (232121121232).

The spelling of 110121000221 in words is "one hundred ten billion, one hundred twenty-one million, two hundred twenty-one", and thus it is an aban number.