1123012201 has 2 divisors, whose sum is σ = 1123012202. Its totient is φ = 1123012200.

The previous prime is 1123012199. The next prime is 1123012277. The reversal of 1123012201 is 1022103211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999824400 + 123187801 = 31620^2 + 11099^2 .

It is an emirp because it is prime and its reverse (1022103211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123012201 - 2¹ = 1123012199 is a prime.

It is a super-2 number, since 2×1123012201² = 2522312807189728802, which contains 22 as substring.

Together with 1123012199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1123012291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561506100 + 561506101.

It is an arithmetic number, because the mean of its divisors is an integer number (561506101).

Almost surely, 2^1123012201 is an apocalyptic number.

It is an amenable number.

1123012201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123012201 is an equidigital number, since it uses as much as digits as its factorization.

1123012201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1123012201 is about 33511.3742033955. The cubic root of 1123012201 is about 1039.4289891209.

Adding to 1123012201 its reverse (1022103211), we get a palindrome (2145115412).

The spelling of 1123012201 in words is "one billion, one hundred twenty-three million, twelve thousand, two hundred one".