1211232132 has 36 divisors (see below), whose sum is σ = 3340065456. Its totient is φ = 367039920.

The previous prime is 1211232131. The next prime is 1211232137. The reversal of 1211232132 is 2312321121.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1211232131) 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, 1528938 + ... + 1529729.

It is an arithmetic number, because the mean of its divisors is an integer number (92779596).

Almost surely, 2^1211232132 is an apocalyptic number.

1211232132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211232132 is an abundant number, since it is smaller than the sum of its proper divisors (2128833324).

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

1211232132 is a wasteful number, since it uses less digits than its factorization.

1211232132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3058688 (or 3058683 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1211232132 is about 34802.7604077608. The cubic root of 1211232132 is about 1065.9638117550.

Adding to 1211232132 its reverse (2312321121), we get a palindrome (3523553253).

It can be divided in two parts, 12112 and 32132, that added together give a palindrome (44244).

The spelling of 1211232132 in words is "one billion, two hundred eleven million, two hundred thirty-two thousand, one hundred thirty-two".