200000202021 has 12 divisors (see below), whose sum is σ = 289609607820. Its totient is φ = 133000963200.

The previous prime is 200000201911. The next prime is 200000202029. The reversal of 200000202021 is 120202000002.

It can be written as a sum of positive squares in 2 ways, for example, as 132613233921 + 67386968100 = 364161^2 + 259590^2 .

It is not a de Polignac number, because 200000202021 - 2¹⁸ = 199999939877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 200000201994 and 200000202012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200000202029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27704926 + ... + 27712143.

It is an arithmetic number, because the mean of its divisors is an integer number (24134133985).

Almost surely, 2^200000202021 is an apocalyptic number.

It is an amenable number.

200000202021 is a deficient number, since it is larger than the sum of its proper divisors (89609405799).

200000202021 is a wasteful number, since it uses less digits than its factorization.

200000202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55417476 (or 55417473 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 200000202021 its reverse (120202000002), we get a palindrome (320202202023).

The spelling of 200000202021 in words is "two hundred billion, two hundred two thousand, twenty-one".