203101000021 has 8 divisors (see below), whose sum is σ = 203635724544. Its totient is φ = 202566690480.

The previous prime is 203100999979. The next prime is 203101000093. The reversal of 203101000021 is 120000101302.

203101000021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 203101000021 - 2²⁵ = 203067445589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203100999971 and 203101000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203101006021) 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 7 ways as a sum of consecutive naturals, for example, 888840 + ... + 1093726.

It is an arithmetic number, because the mean of its divisors is an integer number (25454465568).

Almost surely, 2^203101000021 is an apocalyptic number.

It is an amenable number.

203101000021 is a deficient number, since it is larger than the sum of its proper divisors (534724523).

203101000021 is a wasteful number, since it uses less digits than its factorization.

203101000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207491.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 203101000021 its reverse (120000101302), we get a palindrome (323101101323).

The spelling of 203101000021 in words is "two hundred three billion, one hundred one million, twenty-one", and thus it is an aban number.