21403301210 has 16 divisors (see below), whose sum is σ = 38539478376. Its totient is φ = 8558312448.

The previous prime is 21403301209. The next prime is 21403301221. The reversal of 21403301210 is 1210330412.

It can be written as a sum of positive squares in 4 ways, for example, as 19569491881 + 1833809329 = 139891^2 + 42823^2 .

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, 346007 + ... + 403146.

Almost surely, 2^21403301210 is an apocalyptic number.

21403301210 is a deficient number, since it is larger than the sum of its proper divisors (17136177166).

21403301210 is a wasteful number, since it uses less digits than its factorization.

21403301210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752017.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21403301210 its reverse (1210330412), we get a palindrome (22613631622).

The spelling of 21403301210 in words is "twenty-one billion, four hundred three million, three hundred one thousand, two hundred ten".