1211200120012 has 12 divisors (see below), whose sum is σ = 2119609150120. Its totient is φ = 605597505696.

The previous prime is 1211200120001. The next prime is 1211200120061. The reversal of 1211200120012 is 2100210021121.

1211200120012 is a modest number, since divided by 120012 gives 12112 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1211200119974 and 1211200120001.

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, 776983 + ... + 1739569.

Almost surely, 2^{1211200120012} is an apocalyptic number.

It is an amenable number.

1211200120012 is a deficient number, since it is larger than the sum of its proper divisors (908409030108).

1211200120012 is a wasteful number, since it uses less digits than its factorization.

1211200120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277160 (or 1277158 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1211200120012 its reverse (2100210021121), we get a palindrome (3311410141133).

The spelling of 1211200120012 in words is "one trillion, two hundred eleven billion, two hundred million, one hundred twenty thousand, twelve".