1161052201 has 4 divisors (see below), whose sum is σ = 1165910400. Its totient is φ = 1156194004.

The previous prime is 1161052199. The next prime is 1161052229. The reversal of 1161052201 is 1022501611.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1022501611 = 383 ⋅2669717.

It is a cyclic number.

It is not a de Polignac number, because 1161052201 - 2¹ = 1161052199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161052261) 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, 2428741 + ... + 2429218.

It is an arithmetic number, because the mean of its divisors is an integer number (291477600).

Almost surely, 2^1161052201 is an apocalyptic number.

It is an amenable number.

1161052201 is a deficient number, since it is larger than the sum of its proper divisors (4858199).

1161052201 is an equidigital number, since it uses as much as digits as its factorization.

1161052201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858198.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1161052201 is about 34074.2160731542. The cubic root of 1161052201 is about 1051.0351698939.

Adding to 1161052201 its reverse (1022501611), we get a palindrome (2183553812).

The spelling of 1161052201 in words is "one billion, one hundred sixty-one million, fifty-two thousand, two hundred one".