203202000021 has 8 divisors (see below), whose sum is σ = 270945779104. Its totient is φ = 135463110480.

The previous prime is 203202000017. The next prime is 203202000061. The reversal of 203202000021 is 120000202302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203202000021 - 2² = 203202000017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203201999970 and 203202000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203202000061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1124290 + ... + 1292451.

It is an arithmetic number, because the mean of its divisors is an integer number (33868222388).

Almost surely, 2^203202000021 is an apocalyptic number.

It is an amenable number.

203202000021 is a deficient number, since it is larger than the sum of its proper divisors (67743779083).

203202000021 is a wasteful number, since it uses less digits than its factorization.

203202000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444771.

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 203202000021 its reverse (120000202302), we get a palindrome (323202202323).

The spelling of 203202000021 in words is "two hundred three billion, two hundred two million, twenty-one", and thus it is an aban number.