1123611201 has 12 divisors (see below), whose sum is σ = 1625010660. Its totient is φ = 748143360.

The previous prime is 1123611193. The next prime is 1123611217. The reversal of 1123611201 is 1021163211.

1123611201 is a `hidden beast` number, since 11 + 23 + 611 + 20 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 507330576 + 616280625 = 22524^2 + 24825^2 .

It is not a de Polignac number, because 1123611201 - 2³ = 1123611193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123611221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69880 + ... + 84441.

It is an arithmetic number, because the mean of its divisors is an integer number (135417555).

Almost surely, 2^1123611201 is an apocalyptic number.

It is an amenable number.

1123611201 is a deficient number, since it is larger than the sum of its proper divisors (501399459).

1123611201 is a wasteful number, since it uses less digits than its factorization.

1123611201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155136 (or 155133 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1123611201 is about 33520.3102760103. The cubic root of 1123611201 is about 1039.6137622094.

Adding to 1123611201 its reverse (1021163211), we get a palindrome (2144774412).

The spelling of 1123611201 in words is "one billion, one hundred twenty-three million, six hundred eleven thousand, two hundred one".