1121001201 has 10 divisors (see below), whose sum is σ = 1674582162. Its totient is φ = 747334080.

The previous prime is 1121001151. The next prime is 1121001227. The reversal of 1121001201 is 1021001211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1064390625 + 56610576 = 32625^2 + 7524^2 .

It is not a de Polignac number, because 1121001201 - 2²² = 1116806897 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 (1121001241) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6919680 + ... + 6919841.

Almost surely, 2^1121001201 is an apocalyptic number.

It is an amenable number.

1121001201 is a deficient number, since it is larger than the sum of its proper divisors (553580961).

1121001201 is an equidigital number, since it uses as much as digits as its factorization.

1121001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13839533 (or 13839524 counting only the distinct ones).

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

The square root of 1121001201 is about 33481.3560209260. The cubic root of 1121001201 is about 1038.8081764391.

Adding to 1121001201 its reverse (1021001211), we get a palindrome (2142002412).

The spelling of 1121001201 in words is "one billion, one hundred twenty-one million, one thousand, two hundred one".