21002110010210 has 32 divisors (see below), whose sum is σ = 43213036083840. Its totient is φ = 7199274183552.

The previous prime is 21002110010149. The next prime is 21002110010281. The reversal of 21002110010210 is 1201001120012.

It is a junction number, because it is equal to n+sod(n) for n = 21002110010191 and 21002110010200.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 29842364 + ... + 30538023.

It is an arithmetic number, because the mean of its divisors is an integer number (1350407377620).

Almost surely, 2^{21002110010210} is an apocalyptic number.

21002110010210 is an abundant number, since it is smaller than the sum of its proper divisors (22210926073630).

21002110010210 is a wasteful number, since it uses less digits than its factorization.

21002110010210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60385370.

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

Adding to 21002110010210 its reverse (1201001120012), we get a palindrome (22203111130222).

The spelling of 21002110010210 in words is "twenty-one trillion, two billion, one hundred ten million, ten thousand, two hundred ten".