21011310201010 has 32 divisors (see below), whose sum is σ = 38246039924400. Its totient is φ = 8309931801600.

The previous prime is 21011310200971. The next prime is 21011310201031. The reversal of 21011310201010 is 1010201311012.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1164044630281 + 19847265570729 = 1078909^2 + 4455027^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53293486 + ... + 53686294.

Almost surely, 2^{21011310201010} is an apocalyptic number.

21011310201010 is a deficient number, since it is larger than the sum of its proper divisors (17234729723390).

21011310201010 is a wasteful number, since it uses less digits than its factorization.

21011310201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453006.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 21011310201010 its reverse (1010201311012), we get a palindrome (22021511512022).

The spelling of 21011310201010 in words is "twenty-one trillion, eleven billion, three hundred ten million, two hundred one thousand, ten".