21203000202 has 64 divisors (see below), whose sum is σ = 48468430080. Its totient is φ = 6143284224.

The previous prime is 21203000197. The next prime is 21203000237. The reversal of 21203000202 is 20200030212.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 87793 + ... + 223860.

It is an arithmetic number, because the mean of its divisors is an integer number (757319220).

Almost surely, 2^21203000202 is an apocalyptic number.

21203000202 is an abundant number, since it is smaller than the sum of its proper divisors (27265429878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21203000202 is a wasteful number, since it uses less digits than its factorization.

21203000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311727.

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

Adding to 21203000202 its reverse (20200030212), we get a palindrome (41403030414).

The spelling of 21203000202 in words is "twenty-one billion, two hundred three million, two hundred two", and thus it is an aban number.