201121220122012 has 12 divisors (see below), whose sum is σ = 360546577536096. Its totient is φ = 98107912254560.

The previous prime is 201121220122007. The next prime is 201121220122049. The reversal of 201121220122012 is 210221022121102.

It is a congruent number.

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, 613174451428 + ... + 613174451755.

It is an arithmetic number, because the mean of its divisors is an integer number (30045548128008).

Almost surely, 2^{201121220122012} is an apocalyptic number.

It is an amenable number.

201121220122012 is a deficient number, since it is larger than the sum of its proper divisors (159425357414084).

201121220122012 is a wasteful number, since it uses less digits than its factorization.

201121220122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226348903228 (or 1226348903226 counting only the distinct ones).

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

Adding to 201121220122012 its reverse (210221022121102), we get a palindrome (411342242243114).

The spelling of 201121220122012 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, twelve".