21211002010010 has 16 divisors (see below), whose sum is σ = 38702814627816. Its totient is φ = 8368176135168.

The previous prime is 21211002009997. The next prime is 21211002010019. The reversal of 21211002010010 is 1001020011212.

It can be written as a sum of positive squares in 4 ways, for example, as 9821598727249 + 11389403282761 = 3133943^2 + 3374819^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21211002009973 and 21211002010000.

It is not an unprimeable number, because it can be changed into a prime (21211002010019) 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, 14528082839 + ... + 14528084298.

Almost surely, 2^{21211002010010} is an apocalyptic number.

21211002010010 is a deficient number, since it is larger than the sum of its proper divisors (17491812617806).

21211002010010 is a wasteful number, since it uses less digits than its factorization.

21211002010010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29056167217.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21211002010010 its reverse (1001020011212), we get a palindrome (22212022021222).

The spelling of 21211002010010 in words is "twenty-one trillion, two hundred eleven billion, two million, ten thousand, ten".