1123136201 has 4 divisors (see below), whose sum is σ = 1225239504. Its totient is φ = 1021032900.

The previous prime is 1123136173. The next prime is 1123136219. The reversal of 1123136201 is 1026313211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1123136201 - 2⁶ = 1123136137 is a prime.

It is a super-2 number, since 2×1123136201² = 2522869851993424802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123136251) 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, 51051635 + ... + 51051656.

It is an arithmetic number, because the mean of its divisors is an integer number (306309876).

Almost surely, 2^1123136201 is an apocalyptic number.

1123136201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1123136201 is a deficient number, since it is larger than the sum of its proper divisors (102103303).

1123136201 is a wasteful number, since it uses less digits than its factorization.

1123136201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102103302.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1123136201 is about 33513.2242704279. The cubic root of 1123136201 is about 1039.4672447014.

Adding to 1123136201 its reverse (1026313211), we get a palindrome (2149449412).

It can be divided in two parts, 112 and 3136201, that added together give a palindrome (3136313).

The spelling of 1123136201 in words is "one billion, one hundred twenty-three million, one hundred thirty-six thousand, two hundred one".