21210102010010 has 64 divisors (see below), whose sum is σ = 38690655022080. Its totient is φ = 8370865520640.

The previous prime is 21210102009989. The next prime is 21210102010093. The reversal of 21210102010010 is 1001020101212.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21210102009973 and 21210102010000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273396506 + ... + 273474074.

It is an arithmetic number, because the mean of its divisors is an integer number (604541484720).

Almost surely, 2^{21210102010010} is an apocalyptic number.

21210102010010 is a deficient number, since it is larger than the sum of its proper divisors (17480553012070).

21210102010010 is a wasteful number, since it uses less digits than its factorization.

21210102010010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78711.

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

Adding to 21210102010010 its reverse (1001020101212), we get a palindrome (22211122111222).

The spelling of 21210102010010 in words is "twenty-one trillion, two hundred ten billion, one hundred two million, ten thousand, ten".