1052112181 has 4 divisors (see below), whose sum is σ = 1052478252. Its totient is φ = 1051746112.

The previous prime is 1052112163. The next prime is 1052112209. The reversal of 1052112181 is 1812112501.

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 93219025 + 958893156 = 9655^2 + 30966^2 .

It is a cyclic number.

It is not a de Polignac number, because 1052112181 - 2⁷ = 1052112053 is a prime.

It is a super-2 number, since 2×1052112181² = 2213880082817153522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052112101) 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, 178690 + ... + 184483.

It is an arithmetic number, because the mean of its divisors is an integer number (263119563).

Almost surely, 2^1052112181 is an apocalyptic number.

It is an amenable number.

1052112181 is a deficient number, since it is larger than the sum of its proper divisors (366071).

1052112181 is an equidigital number, since it uses as much as digits as its factorization.

1052112181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366070.

The product of its (nonzero) digits is 160, while the sum is 22.

The square root of 1052112181 is about 32436.2787785529. The cubic root of 1052112181 is about 1017.0774282972.

Adding to 1052112181 its reverse (1812112501), we get a palindrome (2864224682).

The spelling of 1052112181 in words is "one billion, fifty-two million, one hundred twelve thousand, one hundred eighty-one".