1201221132 has 48 divisors (see below), whose sum is σ = 2918113632. Its totient is φ = 384238080.

The previous prime is 1201221127. The next prime is 1201221143. The reversal of 1201221132 is 2311221021.

It is a super-2 number, since 2×1201221132² = 2885864415926722848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13882 + ... + 50942.

It is an arithmetic number, because the mean of its divisors is an integer number (60794034).

Almost surely, 2^1201221132 is an apocalyptic number.

1201221132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201221132 is an abundant number, since it is smaller than the sum of its proper divisors (1716892500).

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

1201221132 is a wasteful number, since it uses less digits than its factorization.

1201221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37178 (or 37176 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1201221132 is about 34658.6371919036. The cubic root of 1201221132 is about 1063.0189043122.

Adding to 1201221132 its reverse (2311221021), we get a palindrome (3512442153).

The spelling of 1201221132 in words is "one billion, two hundred one million, two hundred twenty-one thousand, one hundred thirty-two".