1210020121012 has 12 divisors (see below), whose sum is σ = 2117603932416. Its totient is φ = 604990426040.

The previous prime is 1210020120983. The next prime is 1210020121151. The reversal of 1210020121012 is 2101210200121.

It is a junction number, because it is equal to n+sod(n) for n = 1210020120983 and 1210020121001.

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, 4769518 + ... + 5016805.

It is an arithmetic number, because the mean of its divisors is an integer number (176466994368).

Almost surely, 2^{1210020121012} is an apocalyptic number.

It is an amenable number.

1210020121012 is a deficient number, since it is larger than the sum of its proper divisors (907583811404).

1210020121012 is a wasteful number, since it uses less digits than its factorization.

1210020121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9817238 (or 9817236 counting only the distinct ones).

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

Adding to 1210020121012 its reverse (2101210200121), we get a palindrome (3311230321133).

The spelling of 1210020121012 in words is "one trillion, two hundred ten billion, twenty million, one hundred twenty-one thousand, twelve".