1213212130 has 48 divisors (see below), whose sum is σ = 2489209920. Its totient is φ = 424367424.

The previous prime is 1213212109. The next prime is 1213212137. The reversal of 1213212130 is 312123121.

It is not an unprimeable number, because it can be changed into a prime (1213212137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13219 + ... + 51001.

It is an arithmetic number, because the mean of its divisors is an integer number (51858540).

Almost surely, 2^1213212130 is an apocalyptic number.

1213212130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213212130 is an abundant number, since it is smaller than the sum of its proper divisors (1275997790).

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

1213212130 is a wasteful number, since it uses less digits than its factorization.

1213212130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37835 (or 37822 counting only the distinct ones).

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

The square root of 1213212130 is about 34831.1947828380. The cubic root of 1213212130 is about 1066.5443382936.

Adding to 1213212130 its reverse (312123121), we get a palindrome (1525335251).

The spelling of 1213212130 in words is "one billion, two hundred thirteen million, two hundred twelve thousand, one hundred thirty".