1101121201 has 4 divisors (see below), whose sum is σ = 1101408804. Its totient is φ = 1100833600.

The previous prime is 1101121183. The next prime is 1101121211. The reversal of 1101121201 is 1021211011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 765352225 + 335768976 = 27665^2 + 18324^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101121201 - 2⁵ = 1101121169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101121211) 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 3 ways as a sum of consecutive naturals, for example, 137980 + ... + 145741.

It is an arithmetic number, because the mean of its divisors is an integer number (275352201).

Almost surely, 2^1101121201 is an apocalyptic number.

It is an amenable number.

1101121201 is a deficient number, since it is larger than the sum of its proper divisors (287603).

1101121201 is an equidigital number, since it uses as much as digits as its factorization.

1101121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287602.

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

The square root of 1101121201 is about 33183.1463396707. The cubic root of 1101121201 is about 1032.6307216645.

Adding to 1101121201 its reverse (1021211011), we get a palindrome (2122332212).

The spelling of 1101121201 in words is "one billion, one hundred one million, one hundred twenty-one thousand, two hundred one".