1212332130 has 32 divisors (see below), whose sum is σ = 3232886400. Its totient is φ = 323288496.

The previous prime is 1212332111. The next prime is 1212332137. The reversal of 1212332130 is 312332121.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1212332137) 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 15 ways as a sum of consecutive naturals, for example, 2244790 + ... + 2245329.

It is an arithmetic number, because the mean of its divisors is an integer number (101027700).

Almost surely, 2^1212332130 is an apocalyptic number.

1212332130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212332130 is an abundant number, since it is smaller than the sum of its proper divisors (2020554270).

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

1212332130 is a wasteful number, since it uses less digits than its factorization.

1212332130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490135 (or 4490129 counting only the distinct ones).

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

The square root of 1212332130 is about 34818.5601368006. The cubic root of 1212332130 is about 1066.2864042761.

Adding to 1212332130 its reverse (312332121), we get a palindrome (1524664251).

Subtracting from 1212332130 its reverse (312332121), we obtain a palindrome (900000009).

It can be divided in two parts, 12123 and 32130, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 1212332130 in words is "one billion, two hundred twelve million, three hundred thirty-two thousand, one hundred thirty".