1213210332 has 48 divisors (see below), whose sum is σ = 3160326400. Its totient is φ = 402479280.

The previous prime is 1213210309. The next prime is 1213210337. The reversal of 1213210332 is 2330123121.

1213210332 is a `hidden beast` number, since 12 + 1 + 321 + 0 + 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 (1213210337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3832 + ... + 49407.

Almost surely, 2^1213210332 is an apocalyptic number.

1213210332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213210332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1580163200).

1213210332 is an abundant number, since it is smaller than the sum of its proper divisors (1947116068).

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

1213210332 is a wasteful number, since it uses less digits than its factorization.

1213210332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53463 (or 53455 counting only the distinct ones).

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

The square root of 1213210332 is about 34831.1689726314. The cubic root of 1213210332 is about 1066.5438114147.

Adding to 1213210332 its reverse (2330123121), we get a palindrome (3543333453).

The spelling of 1213210332 in words is "one billion, two hundred thirteen million, two hundred ten thousand, three hundred thirty-two".