1123252201 has 6 divisors (see below), whose sum is σ = 1147661930. Its totient is φ = 1099351056.

The previous prime is 1123252181. The next prime is 1123252289. The reversal of 1123252201 is 1022523211.

It can be written as a sum of positive squares in only one way, i.e., 1107292176 + 15960025 = 33276^2 + 3995^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1123252201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123252301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 252036 + ... + 256453.

Almost surely, 2^1123252201 is an apocalyptic number.

It is an amenable number.

1123252201 is a deficient number, since it is larger than the sum of its proper divisors (24409729).

1123252201 is an frugal number, since it uses more digits than its factorization.

1123252201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508583 (or 508536 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1123252201 is about 33514.9548858416. The cubic root of 1123252201 is about 1039.5030296310.

Adding to 1123252201 its reverse (1022523211), we get a palindrome (2145775412).

The spelling of 1123252201 in words is "one billion, one hundred twenty-three million, two hundred fifty-two thousand, two hundred one".