1211132148 has 12 divisors (see below), whose sum is σ = 2825975040. Its totient is φ = 403710712.

The previous prime is 1211132147. The next prime is 1211132161. The reversal of 1211132148 is 8412311121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211132141) 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, 50463828 + ... + 50463851.

It is an arithmetic number, because the mean of its divisors is an integer number (235497920).

Almost surely, 2^1211132148 is an apocalyptic number.

It is an amenable number.

1211132148 is an abundant number, since it is smaller than the sum of its proper divisors (1614842892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211132148 is a wasteful number, since it uses less digits than its factorization.

1211132148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100927686 (or 100927684 counting only the distinct ones).

The product of its digits is 384, while the sum is 24.

The square root of 1211132148 is about 34801.3239403331. The cubic root of 1211132148 is about 1065.9344801194.

Adding to 1211132148 its reverse (8412311121), we get a palindrome (9623443269).

The spelling of 1211132148 in words is "one billion, two hundred eleven million, one hundred thirty-two thousand, one hundred forty-eight".