1121021113 has 8 divisors (see below), whose sum is σ = 1126980288. Its totient is φ = 1115071344.

The previous prime is 1121021093. The next prime is 1121021117. The reversal of 1121021113 is 3111201211.

It is a happy number.

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 1121021113 - 2¹⁷ = 1120890041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121021093 and 1121021102.

It is not an unprimeable number, because it can be changed into a prime (1121021117) 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, 446620 + ... + 449122.

It is an arithmetic number, because the mean of its divisors is an integer number (140872536).

Almost surely, 2^1121021113 is an apocalyptic number.

It is an amenable number.

1121021113 is a deficient number, since it is larger than the sum of its proper divisors (5959175).

1121021113 is a wasteful number, since it uses less digits than its factorization.

1121021113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4703.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1121021113 is about 33481.6533791269. The cubic root of 1121021113 is about 1038.8143270795.

Adding to 1121021113 its reverse (3111201211), we get a palindrome (4232222324).

It can be divided in two parts, 11210 and 21113, that added together give a palindrome (32323).

The spelling of 1121021113 in words is "one billion, one hundred twenty-one million, twenty-one thousand, one hundred thirteen".