212021020003 has 4 divisors (see below), whose sum is σ = 228330329248. Its totient is φ = 195711710760.

The previous prime is 212021019997. The next prime is 212021020061. The reversal of 212021020003 is 300020120212.

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

It is a cyclic number.

It is not a de Polignac number, because 212021020003 - 2³³ = 203431085411 is a prime.

It is a super-2 number, since 2×212021020003² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 16309309231 = 212021020003 / (2 + 1 + 2 + 0 + 2 + 1 + 0 + 2 + 0 + 0 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021020093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8154654603 + ... + 8154654628.

It is an arithmetic number, because the mean of its divisors is an integer number (57082582312).

Almost surely, 2^212021020003 is an apocalyptic number.

212021020003 is a deficient number, since it is larger than the sum of its proper divisors (16309309245).

212021020003 is a wasteful number, since it uses less digits than its factorization.

212021020003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16309309244.

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

Adding to 212021020003 its reverse (300020120212), we get a palindrome (512041140215).

The spelling of 212021020003 in words is "two hundred twelve billion, twenty-one million, twenty thousand, three".