1121000121 has 8 divisors (see below), whose sum is σ = 1660740960. Its totient is φ = 747333396.

The previous prime is 1121000119. The next prime is 1121000131. The reversal of 1121000121 is 1210001211.

It is a happy number.

It is not a de Polignac number, because 1121000121 - 2¹ = 1121000119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1121000131) 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, 20759235 + ... + 20759288.

It is an arithmetic number, because the mean of its divisors is an integer number (207592620).

Almost surely, 2^1121000121 is an apocalyptic number.

It is an amenable number.

1121000121 is a deficient number, since it is larger than the sum of its proper divisors (539740839).

1121000121 is an equidigital number, since it uses as much as digits as its factorization.

1121000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41518532 (or 41518526 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1121000121 is about 33481.3398925431. The cubic root of 1121000121 is about 1038.8078428346.

Adding to 1121000121 its reverse (1210001211), we get a palindrome (2331001332).

The spelling of 1121000121 in words is "one billion, one hundred twenty-one million, one hundred twenty-one", and thus it is an aban number.