1213201132 has 24 divisors (see below), whose sum is σ = 2494274832. Its totient is φ = 509035200.

The previous prime is 1213201127. The next prime is 1213201159. The reversal of 1213201132 is 2311023121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1059919 + ... + 1061062.

It is an arithmetic number, because the mean of its divisors is an integer number (103928118).

Almost surely, 2^1213201132 is an apocalyptic number.

It is an amenable number.

1213201132 is an abundant number, since it is smaller than the sum of its proper divisors (1281073700).

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

1213201132 is a wasteful number, since it uses less digits than its factorization.

1213201132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121009 (or 2121007 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1213201132 is about 34831.0369067589. The cubic root of 1213201132 is about 1066.5411154744.

Adding to 1213201132 its reverse (2311023121), we get a palindrome (3524224253).

The spelling of 1213201132 in words is "one billion, two hundred thirteen million, two hundred one thousand, one hundred thirty-two".