21212210110002 has 64 divisors (see below), whose sum is σ = 44533170226944. Its totient is φ = 6728537237760.

The previous prime is 21212210109989. The next prime is 21212210110037. The reversal of 21212210110002 is 20001101221212.

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, 886227 + ... + 6573417.

It is an arithmetic number, because the mean of its divisors is an integer number (695830784796).

Almost surely, 2^{21212210110002} is an apocalyptic number.

21212210110002 is an abundant number, since it is smaller than the sum of its proper divisors (23320960116942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21212210110002 is a wasteful number, since it uses less digits than its factorization.

21212210110002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5687603.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21212210110002 its reverse (20001101221212), we get a palindrome (41213311331214).

The spelling of 21212210110002 in words is "twenty-one trillion, two hundred twelve billion, two hundred ten million, one hundred ten thousand, two".