121212323130 has 32 divisors (see below), whose sum is σ = 290919605184. Its totient is φ = 32322171776.

The previous prime is 121212323093. The next prime is 121212323143. The reversal of 121212323130 is 31323212121.

It is a junction number, because it is equal to n+sod(n) for n = 121212323097 and 121212323106.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1186249 + ... + 1284371.

It is an arithmetic number, because the mean of its divisors is an integer number (9091237662).

Almost surely, 2^121212323130 is an apocalyptic number.

121212323130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121212323130 is an abundant number, since it is smaller than the sum of its proper divisors (169707282054).

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

121212323130 is a wasteful number, since it uses less digits than its factorization.

121212323130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139310.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121212323130 its reverse (31323212121), we get a palindrome (152535535251).

The spelling of 121212323130 in words is "one hundred twenty-one billion, two hundred twelve million, three hundred twenty-three thousand, one hundred thirty".