1213201332 has 72 divisors (see below), whose sum is σ = 3657204096. Its totient is φ = 331556544.

The previous prime is 1213201307. The next prime is 1213201333. The reversal of 1213201332 is 2331023121.

1213201332 is a `hidden beast` number, since 12 + 1 + 320 + 1 + 332 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213201333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98863 + ... + 110454.

Almost surely, 2^1213201332 is an apocalyptic number.

1213201332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213201332 is an abundant number, since it is smaller than the sum of its proper divisors (2444002764).

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

1213201332 is a wasteful number, since it uses less digits than its factorization.

1213201332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209357 (or 209352 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1213201332 is about 34831.0397777614. The cubic root of 1213201332 is about 1066.5411740820.

Adding to 1213201332 its reverse (2331023121), we get a palindrome (3544224453).

The spelling of 1213201332 in words is "one billion, two hundred thirteen million, two hundred one thousand, three hundred thirty-two".