121232103212 has 48 divisors (see below), whose sum is σ = 232077146112. Its totient is φ = 54954775680.

The previous prime is 121232103211. The next prime is 121232103221. The reversal of 121232103212 is 212301232121.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (121232103211) 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, 28211048 + ... + 28215344.

It is an arithmetic number, because the mean of its divisors is an integer number (4834940544).

Almost surely, 2^121232103212 is an apocalyptic number.

It is an amenable number.

121232103212 is a deficient number, since it is larger than the sum of its proper divisors (110845042900).

121232103212 is a wasteful number, since it uses less digits than its factorization.

121232103212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5918 (or 5916 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121232103212 its reverse (212301232121), we get a palindrome (333533335333).

The spelling of 121232103212 in words is "one hundred twenty-one billion, two hundred thirty-two million, one hundred three thousand, two hundred twelve".