12121201222112 has 12 divisors (see below), whose sum is σ = 23863614906096. Its totient is φ = 6060600611040.

The previous prime is 12121201222099. The next prime is 12121201222139. The reversal of 12121201222112 is 21122210212121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189393769064 + ... + 189393769127.

It is an arithmetic number, because the mean of its divisors is an integer number (1988634575508).

Almost surely, 2^{12121201222112} is an apocalyptic number.

It is an amenable number.

12121201222112 is a deficient number, since it is larger than the sum of its proper divisors (11742413683984).

12121201222112 is an equidigital number, since it uses as much as digits as its factorization.

12121201222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378787538201 (or 378787538193 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12121201222112 its reverse (21122210212121), we get a palindrome (33243411434233).

The spelling of 12121201222112 in words is "twelve trillion, one hundred twenty-one billion, two hundred one million, two hundred twenty-two thousand, one hundred twelve".