1212131130 has 64 divisors (see below), whose sum is σ = 3392582400. Its totient is φ = 277056192.

The previous prime is 1212131083. The next prime is 1212131131. The reversal of 1212131130 is 311312121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1212131131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48609 + ... + 69188.

It is an arithmetic number, because the mean of its divisors is an integer number (53009100).

Almost surely, 2^1212131130 is an apocalyptic number.

1212131130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212131130 is an abundant number, since it is smaller than the sum of its proper divisors (2180451270).

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

1212131130 is a wasteful number, since it uses less digits than its factorization.

1212131130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117828 (or 117814 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1212131130 is about 34815.6736255383. The cubic root of 1212131130 is about 1066.2274722922.

Adding to 1212131130 its reverse (311312121), we get a palindrome (1523443251).

The spelling of 1212131130 in words is "one billion, two hundred twelve million, one hundred thirty-one thousand, one hundred thirty".