1210120121012 has 24 divisors (see below), whose sum is σ = 2310308226912. Its totient is φ = 550035813600.

The previous prime is 1210120121009. The next prime is 1210120121059. The reversal of 1210120121012 is 2101210210121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 876587 + ... + 1785677.

It is an arithmetic number, because the mean of its divisors is an integer number (96262842788).

Almost surely, 2^{1210120121012} is an apocalyptic number.

It is an amenable number.

1210120121012 is a deficient number, since it is larger than the sum of its proper divisors (1100188105900).

1210120121012 is a wasteful number, since it uses less digits than its factorization.

1210120121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939359 (or 939357 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1210120121012 its reverse (2101210210121), we get a palindrome (3311330331133).

The spelling of 1210120121012 in words is "one trillion, two hundred ten billion, one hundred twenty million, one hundred twenty-one thousand, twelve".