1123212301 has 4 divisors (see below), whose sum is σ = 1123707004. Its totient is φ = 1122717600.

The previous prime is 1123212271. The next prime is 1123212313. The reversal of 1123212301 is 1032123211.

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 581533225 + 541679076 = 24115^2 + 23274^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123212301 - 2²⁹ = 586341389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123212401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243930 + ... + 248491.

It is an arithmetic number, because the mean of its divisors is an integer number (280926751).

Almost surely, 2^1123212301 is an apocalyptic number.

It is an amenable number.

1123212301 is a deficient number, since it is larger than the sum of its proper divisors (494703).

1123212301 is an equidigital number, since it uses as much as digits as its factorization.

1123212301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494702.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1123212301 is about 33514.3596238985. The cubic root of 1123212301 is about 1039.4907211272.

Adding to 1123212301 its reverse (1032123211), we get a palindrome (2155335512).

The spelling of 1123212301 in words is "one billion, one hundred twenty-three million, two hundred twelve thousand, three hundred one".