1121020201 has 24 divisors (see below), whose sum is σ = 1339807040. Its totient is φ = 918703296.

The previous prime is 1121020177. The next prime is 1121020211. The reversal of 1121020201 is 1020201211.

It is not a de Polignac number, because 1121020201 - 2⁵ = 1121020169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121020211) 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 23 ways as a sum of consecutive naturals, for example, 640810 + ... + 642556.

Almost surely, 2^1121020201 is an apocalyptic number.

It is an amenable number.

1121020201 is a deficient number, since it is larger than the sum of its proper divisors (218786839).

1121020201 is a wasteful number, since it uses less digits than its factorization.

1121020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921 (or 1892 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1121020201 is about 33481.6397597250. The cubic root of 1121020201 is about 1038.8140453724.

Adding to 1121020201 its reverse (1020201211), we get a palindrome (2141221412).

The spelling of 1121020201 in words is "one billion, one hundred twenty-one million, twenty thousand, two hundred one".