21203000002 has 16 divisors (see below), whose sum is σ = 32836333824. Its totient is φ = 10257678000.

The previous prime is 21202999969. The next prime is 21203000003. The reversal of 21203000002 is 20000030212.

It is not an unprimeable number, because it can be changed into a prime (21203000003) 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, 357552 + ... + 412612.

It is an arithmetic number, because the mean of its divisors is an integer number (2052270864).

Almost surely, 2^21203000002 is an apocalyptic number.

21203000002 is a deficient number, since it is larger than the sum of its proper divisors (11633333822).

21203000002 is a wasteful number, since it uses less digits than its factorization.

21203000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61305.

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 21203000002 its reverse (20000030212), we get a palindrome (41203030214).

The spelling of 21203000002 in words is "twenty-one billion, two hundred three million, two", and thus it is an aban number.