1110000022221 has 4 divisors (see below), whose sum is σ = 1480000029632. Its totient is φ = 740000014812.

The previous prime is 1110000022217. The next prime is 1110000022223. The reversal of 1110000022221 is 1222200000111.

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 1110000022221 - 2² = 1110000022217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1110000022197 and 1110000022206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110000022223) 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, 185000003701 + ... + 185000003706.

It is an arithmetic number, because the mean of its divisors is an integer number (370000007408).

Almost surely, 2^{1110000022221} is an apocalyptic number.

It is an amenable number.

1110000022221 is a deficient number, since it is larger than the sum of its proper divisors (370000007411).

1110000022221 is an equidigital number, since it uses as much as digits as its factorization.

1110000022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370000007410.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1110000022221 its reverse (1222200000111), we get a palindrome (2332200022332).

The spelling of 1110000022221 in words is "one trillion, one hundred ten billion, twenty-two thousand, two hundred twenty-one".