1110202220221 has 8 divisors (see below), whose sum is σ = 1111064148824. Its totient is φ = 1109340429120.

The previous prime is 1110202220213. The next prime is 1110202220243. The reversal of 1110202220221 is 1220222020111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3319372996 + 1106882847225 = 57614^2 + 1052085^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1110202220221 - 2³ = 1110202220213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110202220195 and 1110202220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110202220321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20985415 + ... + 21038251.

It is an arithmetic number, because the mean of its divisors is an integer number (138883018603).

Almost surely, 2^{1110202220221} is an apocalyptic number.

It is an amenable number.

1110202220221 is a deficient number, since it is larger than the sum of its proper divisors (861928603).

1110202220221 is a wasteful number, since it uses less digits than its factorization.

1110202220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68751.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1110202220221 its reverse (1220222020111), we get a palindrome (2330424240332).

The spelling of 1110202220221 in words is "one trillion, one hundred ten billion, two hundred two million, two hundred twenty thousand, two hundred twenty-one".