1002011202021 has 12 divisors (see below), whose sum is σ = 1419226940192. Its totient is φ = 628712910528.

The previous prime is 1002011201993. The next prime is 1002011202037. The reversal of 1002011202021 is 1202021102001.

It is not a de Polignac number, because 1002011202021 - 2¹⁸ = 1002010939877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002011201988 and 1002011202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002011222021) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 577860265 + ... + 577861998.

Almost surely, 2^{1002011202021} is an apocalyptic number.

It is an amenable number.

1002011202021 is a deficient number, since it is larger than the sum of its proper divisors (417215738171).

1002011202021 is a wasteful number, since it uses less digits than its factorization.

1002011202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155722300 (or 1155722283 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1002011202021 its reverse (1202021102001), we get a palindrome (2204032304022).

The spelling of 1002011202021 in words is "one trillion, two billion, eleven million, two hundred two thousand, twenty-one".