21001110210010 has 64 divisors (see below), whose sum is σ = 43285574188800. Its totient is φ = 7186503255552.

The previous prime is 21001110209993. The next prime is 21001110210029. The reversal of 21001110210010 is 1001201110012.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251803396 + ... + 251886784.

It is an arithmetic number, because the mean of its divisors is an integer number (676337096700).

Almost surely, 2^{21001110210010} is an apocalyptic number.

21001110210010 is an abundant number, since it is smaller than the sum of its proper divisors (22284463978790).

21001110210010 is a wasteful number, since it uses less digits than its factorization.

21001110210010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90295.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21001110210010 its reverse (1001201110012), we get a palindrome (22002311320022).

The spelling of 21001110210010 in words is "twenty-one trillion, one billion, one hundred ten million, two hundred ten thousand, ten".