21703336210 has 16 divisors (see below), whose sum is σ = 39094733592. Its totient is φ = 8674950400.

The previous prime is 21703336201. The next prime is 21703336219. The reversal of 21703336210 is 1263330712.

It is an interprime number because it is at equal distance from previous prime (21703336201) and next prime (21703336219).

It can be written as a sum of positive squares in 4 ways, for example, as 9818629921 + 11884706289 = 99089^2 + 109017^2 .

It is not an unprimeable number, because it can be changed into a prime (21703336219) 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, 783721 + ... + 810940.

Almost surely, 2^21703336210 is an apocalyptic number.

21703336210 is a deficient number, since it is larger than the sum of its proper divisors (17391397382).

21703336210 is a wasteful number, since it uses less digits than its factorization.

21703336210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596029.

The product of its (nonzero) digits is 4536, while the sum is 28.

Adding to 21703336210 its reverse (1263330712), we get a palindrome (22966666922).

The spelling of 21703336210 in words is "twenty-one billion, seven hundred three million, three hundred thirty-six thousand, two hundred ten".