1211200120102 has 12 divisors (see below), whose sum is σ = 2113420617900. Its totient is φ = 519085765716.

The previous prime is 1211200120061. The next prime is 1211200120121. The reversal of 1211200120102 is 2010210021121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6179592352 + ... + 6179592547.

It is an arithmetic number, because the mean of its divisors is an integer number (176118384825).

Almost surely, 2^{1211200120102} is an apocalyptic number.

1211200120102 is a deficient number, since it is larger than the sum of its proper divisors (902220497798).

1211200120102 is a wasteful number, since it uses less digits than its factorization.

1211200120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12359184915 (or 12359184908 counting only the distinct ones).

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

Adding to 1211200120102 its reverse (2010210021121), we get a palindrome (3221410141223).

The spelling of 1211200120102 in words is "one trillion, two hundred eleven billion, two hundred million, one hundred twenty thousand, one hundred two".