110221421 has 6 divisors (see below), whose sum is σ = 117086730. Its totient is φ = 103737536.

The previous prime is 110221417. The next prime is 110221429. The reversal of 110221421 is 124122011.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 29311396 + 80910025 = 5414^2 + 8995^2 .

It is not a de Polignac number, because 110221421 - 2² = 110221417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110221396 and 110221405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110221429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 190406 + ... + 190983.

It is an arithmetic number, because the mean of its divisors is an integer number (19514455).

Almost surely, 2^110221421 is an apocalyptic number.

It is an amenable number.

110221421 is a deficient number, since it is larger than the sum of its proper divisors (6865309).

110221421 is an equidigital number, since it uses as much as digits as its factorization.

110221421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381423 (or 381406 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 110221421 is about 10498.6390070332. The cubic root of 110221421 is about 479.4632614403.

Adding to 110221421 its reverse (124122011), we get a palindrome (234343432).

The spelling of 110221421 in words is "one hundred ten million, two hundred twenty-one thousand, four hundred twenty-one".