1110221121 has 4 divisors (see below), whose sum is σ = 1480294832. Its totient is φ = 740147412.

The previous prime is 1110221087. The next prime is 1110221141. The reversal of 1110221121 is 1211220111.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1211220111 = 3 ⋅403740037.

It is not a de Polignac number, because 1110221121 - 2¹¹ = 1110219073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110221097 and 1110221106.

It is not an unprimeable number, because it can be changed into a prime (1110221141) 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, 185036851 + ... + 185036856.

It is an arithmetic number, because the mean of its divisors is an integer number (370073708).

Almost surely, 2^1110221121 is an apocalyptic number.

It is an amenable number.

1110221121 is a deficient number, since it is larger than the sum of its proper divisors (370073711).

1110221121 is an equidigital number, since it uses as much as digits as its factorization.

1110221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370073710.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1110221121 is about 33319.9808073174. The cubic root of 1110221121 is about 1035.4675541626.

Adding to 1110221121 its reverse (1211220111), we get a palindrome (2321441232).

It can be divided in two parts, 11102 and 21121, that added together give a palindrome (32223).

The spelling of 1110221121 in words is "one billion, one hundred ten million, two hundred twenty-one thousand, one hundred twenty-one".