1021220110012 has 24 divisors (see below), whose sum is σ = 1829358223616. Its totient is φ = 498554926128.

The previous prime is 1021220109989. The next prime is 1021220110049. The reversal of 1021220110012 is 2100110221201.

It is a junction number, because it is equal to n+sod(n) for n = 1021220109974 and 1021220110001.

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, 596958 + ... + 1548805.

Almost surely, 2^{1021220110012} is an apocalyptic number.

It is an amenable number.

1021220110012 is a deficient number, since it is larger than the sum of its proper divisors (808138113604).

1021220110012 is a wasteful number, since it uses less digits than its factorization.

1021220110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148577 (or 2148575 counting only the distinct ones).

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

Adding to 1021220110012 its reverse (2100110221201), we get a palindrome (3121330331213).

The spelling of 1021220110012 in words is "one trillion, twenty-one billion, two hundred twenty million, one hundred ten thousand, twelve".