1121172152 has 8 divisors (see below), whose sum is σ = 2102197800. Its totient is φ = 560586072.

The previous prime is 1121172139. The next prime is 1121172163. The reversal of 1121172152 is 2512711211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1121172152² = 2514053988840622208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70073252 + ... + 70073267.

It is an arithmetic number, because the mean of its divisors is an integer number (262774725).

Almost surely, 2^1121172152 is an apocalyptic number.

It is an amenable number.

1121172152 is a deficient number, since it is larger than the sum of its proper divisors (981025648).

1121172152 is a wasteful number, since it uses less digits than its factorization.

1121172152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140146525 (or 140146521 counting only the distinct ones).

The product of its digits is 280, while the sum is 23.

The square root of 1121172152 is about 33483.9088518650. The cubic root of 1121172152 is about 1038.8609793174.

Adding to 1121172152 its reverse (2512711211), we get a palindrome (3633883363).

The spelling of 1121172152 in words is "one billion, one hundred twenty-one million, one hundred seventy-two thousand, one hundred fifty-two".