202012003021 has 4 divisors (see below), whose sum is σ = 202046358844. Its totient is φ = 201977647200.

The previous prime is 202012003019. The next prime is 202012003097. The reversal of 202012003021 is 120300210202.

202012003021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 156451100521 + 45560902500 = 395539^2 + 213450^2 .

It is a cyclic number.

It is not a de Polignac number, because 202012003021 - 2¹ = 202012003019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202012002992 and 202012003010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202012003121) 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 3 ways as a sum of consecutive naturals, for example, 17169090 + ... + 17180851.

It is an arithmetic number, because the mean of its divisors is an integer number (50511589711).

Almost surely, 2^202012003021 is an apocalyptic number.

It is an amenable number.

202012003021 is a deficient number, since it is larger than the sum of its proper divisors (34355823).

202012003021 is an equidigital number, since it uses as much as digits as its factorization.

202012003021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34355822.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 202012003021 its reverse (120300210202), we get a palindrome (322312213223).

The spelling of 202012003021 in words is "two hundred two billion, twelve million, three thousand, twenty-one".