1110021121 has 4 divisors (see below), whose sum is σ = 1210932144. Its totient is φ = 1009110100.

The previous prime is 1110021119. The next prime is 1110021151. The reversal of 1110021121 is 1211200111.

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 a cyclic number.

It is not a de Polignac number, because 1110021121 - 2¹ = 1110021119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110021098 and 1110021107.

It is not an unprimeable number, because it can be changed into a prime (1110021151) 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, 50455495 + ... + 50455516.

It is an arithmetic number, because the mean of its divisors is an integer number (302733036).

Almost surely, 2^1110021121 is an apocalyptic number.

1110021121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1110021121 is a deficient number, since it is larger than the sum of its proper divisors (100911023).

1110021121 is a wasteful number, since it uses less digits than its factorization.

1110021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100911022.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1110021121 is about 33316.9794699339. The cubic root of 1110021121 is about 1035.4053725714.

Adding to 1110021121 its reverse (1211200111), we get a palindrome (2321221232).

The spelling of 1110021121 in words is "one billion, one hundred ten million, twenty-one thousand, one hundred twenty-one".