121201122220012 has 12 divisors (see below), whose sum is σ = 212102147897640. Its totient is φ = 60600508534976.

The previous prime is 121201122220007. The next prime is 121201122220051. The reversal of 121201122220012 is 210022221102121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7706962 + ... + 17372377.

It is an arithmetic number, because the mean of its divisors is an integer number (17675178991470).

Almost surely, 2^{121201122220012} is an apocalyptic number.

It is an amenable number.

121201122220012 is a deficient number, since it is larger than the sum of its proper divisors (90901025677628).

121201122220012 is a wasteful number, since it uses less digits than its factorization.

121201122220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26287520 (or 26287518 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121201122220012 its reverse (210022221102121), we get a palindrome (331223343322133).

The spelling of 121201122220012 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred twenty-two million, two hundred twenty thousand, twelve".