121232134212 has 72 divisors (see below), whose sum is σ = 329111377056. Its totient is φ = 34632202752.

The previous prime is 121232134207. The next prime is 121232134259. The reversal of 121232134212 is 212431232121.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4899223 + ... + 4923905.

It is an arithmetic number, because the mean of its divisors is an integer number (4570991348).

Almost surely, 2^121232134212 is an apocalyptic number.

121232134212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121232134212 is an abundant number, since it is smaller than the sum of its proper divisors (207879242844).

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

121232134212 is a wasteful number, since it uses less digits than its factorization.

121232134212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33057 (or 33048 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

Adding to 121232134212 its reverse (212431232121), we get a palindrome (333663366333).

The spelling of 121232134212 in words is "one hundred twenty-one billion, two hundred thirty-two million, one hundred thirty-four thousand, two hundred twelve".