1121201121 has 16 divisors (see below), whose sum is σ = 1568012544. Its totient is φ = 711788544.

The previous prime is 1121201099. The next prime is 1121201143. The reversal of 1121201121 is 1211021211.

It is an interprime number because it is at equal distance from previous prime (1121201099) and next prime (1121201143).

It is not a de Polignac number, because 1121201121 - 2⁵ = 1121201089 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1121201097 and 1121201106.

It is not an unprimeable number, because it can be changed into a prime (1121209121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102240 + ... + 112673.

It is an arithmetic number, because the mean of its divisors is an integer number (98000784).

Almost surely, 2^1121201121 is an apocalyptic number.

It is an amenable number.

1121201121 is a deficient number, since it is larger than the sum of its proper divisors (446811423).

1121201121 is a wasteful number, since it uses less digits than its factorization.

1121201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215000.

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

The square root of 1121201121 is about 33484.3414299878. The cubic root of 1121201121 is about 1038.8699266512.

Adding to 1121201121 its reverse (1211021211), we get a palindrome (2332222332).

The spelling of 1121201121 in words is "one billion, one hundred twenty-one million, two hundred one thousand, one hundred twenty-one".