1213212032 has 32 divisors (see below), whose sum is σ = 2494920000. Its totient is φ = 587036160.

The previous prime is 1213212031. The next prime is 1213212037. The reversal of 1213212032 is 2302123121.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1213212032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213212031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148907 + ... + 156842.

It is an arithmetic number, because the mean of its divisors is an integer number (77966250).

Almost surely, 2^1213212032 is an apocalyptic number.

It is an amenable number.

1213212032 is an abundant number, since it is smaller than the sum of its proper divisors (1281707968).

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

1213212032 is an equidigital number, since it uses as much as digits as its factorization.

1213212032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305794 (or 305782 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1213212032 is about 34831.1933760530. The cubic root of 1213212032 is about 1066.5443095761.

Adding to 1213212032 its reverse (2302123121), we get a palindrome (3515335153).

The spelling of 1213212032 in words is "one billion, two hundred thirteen million, two hundred twelve thousand, thirty-two".