2121020110012 has 24 divisors (see below), whose sum is σ = 3719138491712. Its totient is φ = 1058409633600.

The previous prime is 2121020109983. The next prime is 2121020110021. The reversal of 2121020110012 is 2100110201212.

It is a junction number, because it is equal to n+sod(n) for n = 2121020109974 and 2121020110001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17365837 + ... + 17487547.

Almost surely, 2^{2121020110012} is an apocalyptic number.

It is an amenable number.

2121020110012 is a deficient number, since it is larger than the sum of its proper divisors (1598118381700).

2121020110012 is a wasteful number, since it uses less digits than its factorization.

2121020110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130309 (or 130307 counting only the distinct ones).

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

Adding to 2121020110012 its reverse (2100110201212), we get a palindrome (4221130311224).

The spelling of 2121020110012 in words is "two trillion, one hundred twenty-one billion, twenty million, one hundred ten thousand, twelve".