1212312130 has 32 divisors (see below), whose sum is σ = 2209737600. Its totient is φ = 478835712.

The previous prime is 1212312113. The next prime is 1212312139. The reversal of 1212312130 is 312132121.

It is not an unprimeable number, because it can be changed into a prime (1212312139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266011 + ... + 270529.

It is an arithmetic number, because the mean of its divisors is an integer number (69054300).

Almost surely, 2^1212312130 is an apocalyptic number.

1212312130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212312130 is a deficient number, since it is larger than the sum of its proper divisors (997425470).

1212312130 is a wasteful number, since it uses less digits than its factorization.

1212312130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858.

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

The square root of 1212312130 is about 34818.2729324704. The cubic root of 1212312130 is about 1066.2805406890.

Adding to 1212312130 its reverse (312132121), we get a palindrome (1524444251).

Subtracting from 1212312130 its reverse (312132121), we obtain a square (900180009 = 30003²).

The spelling of 1212312130 in words is "one billion, two hundred twelve million, three hundred twelve thousand, one hundred thirty".