21203430010 has 16 divisors (see below), whose sum is σ = 43618484736. Its totient is φ = 7269747408.

The previous prime is 21203430007. The next prime is 21203430091. The reversal of 21203430010 is 1003430212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151453002 + ... + 151453141.

It is an arithmetic number, because the mean of its divisors is an integer number (2726155296).

Almost surely, 2^21203430010 is an apocalyptic number.

21203430010 is an abundant number, since it is smaller than the sum of its proper divisors (22415054726).

21203430010 is a wasteful number, since it uses less digits than its factorization.

21203430010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302906157.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21203430010 its reverse (1003430212), we get a palindrome (22206860222).

The spelling of 21203430010 in words is "twenty-one billion, two hundred three million, four hundred thirty thousand, ten".