1121021121 has 8 divisors (see below), whose sum is σ = 1630576224. Its totient is φ = 679406720.

The previous prime is 1121021117. The next prime is 1121021149. The reversal of 1121021121 is 1211201211.

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 1121021121 - 2² = 1121021117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121021097 and 1121021106.

It is not an unprimeable number, because it can be changed into a prime (1121021621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16985136 + ... + 16985201.

It is an arithmetic number, because the mean of its divisors is an integer number (203822028).

Almost surely, 2^1121021121 is an apocalyptic number.

1121021121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121021121 is a deficient number, since it is larger than the sum of its proper divisors (509555103).

1121021121 is a wasteful number, since it uses less digits than its factorization.

1121021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33970351.

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

The square root of 1121021121 is about 33481.6534985953. The cubic root of 1121021121 is about 1038.8143295506.

Adding to 1121021121 its reverse (1211201211), we get a palindrome (2332222332).

The spelling of 1121021121 in words is "one billion, one hundred twenty-one million, twenty-one thousand, one hundred twenty-one".