21010210010 has 32 divisors (see below), whose sum is σ = 39319257600. Its totient is φ = 8074457280.

The previous prime is 21010210009. The next prime is 21010210031. The reversal of 21010210010 is 1001201012.

It is a self number, because there is not a number n which added to its sum of digits gives 21010210010.

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, 200705 + ... + 286884.

It is an arithmetic number, because the mean of its divisors is an integer number (1228726800).

Almost surely, 2^21010210010 is an apocalyptic number.

21010210010 is a deficient number, since it is larger than the sum of its proper divisors (18309047590).

21010210010 is a wasteful number, since it uses less digits than its factorization.

21010210010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487766.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 21010210010 its reverse (1001201012), we get a palindrome (22011411022).

The spelling of 21010210010 in words is "twenty-one billion, ten million, two hundred ten thousand, ten".