21203230010 has 16 divisors (see below), whose sum is σ = 38193120000. Its totient is φ = 8475224016.

The previous prime is 21203230003. The next prime is 21203230019. The reversal of 21203230010 is 1003230212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21203230019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 743810 + ... + 771789.

It is an arithmetic number, because the mean of its divisors is an integer number (2387070000).

Almost surely, 2^21203230010 is an apocalyptic number.

21203230010 is a deficient number, since it is larger than the sum of its proper divisors (16989889990).

21203230010 is a wasteful number, since it uses less digits than its factorization.

21203230010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517005.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21203230010 its reverse (1003230212), we get a palindrome (22206460222).

The spelling of 21203230010 in words is "twenty-one billion, two hundred three million, two hundred thirty thousand, ten".