1020202021012 has 12 divisors (see below), whose sum is σ = 1812000604960. Its totient is φ = 502487562456.

The previous prime is 1020202020977. The next prime is 1020202021063. The reversal of 1020202021012 is 2101202020201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1020202020983 and 1020202021001.

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 3 ways as a sum of consecutive naturals, for example, 1903361712 + ... + 1903362247.

Almost surely, 2^{1020202021012} is an apocalyptic number.

It is an amenable number.

1020202021012 is a deficient number, since it is larger than the sum of its proper divisors (791798583948).

1020202021012 is a wasteful number, since it uses less digits than its factorization.

1020202021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3806724030 (or 3806724028 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1020202021012 its reverse (2101202020201), we get a palindrome (3121404041213).

The spelling of 1020202021012 in words is "one trillion, twenty billion, two hundred two million, twenty-one thousand, twelve".