21210002210102 has 16 divisors (see below), whose sum is σ = 31836695566032. Its totient is φ = 10597770754560.

The previous prime is 21210002210069. The next prime is 21210002210119. The reversal of 21210002210102 is 20101220001212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138426878 + ... + 138580014.

It is an arithmetic number, because the mean of its divisors is an integer number (1989793472877).

Almost surely, 2^{21210002210102} is an apocalyptic number.

21210002210102 is a deficient number, since it is larger than the sum of its proper divisors (10626693355930).

21210002210102 is a wasteful number, since it uses less digits than its factorization.

21210002210102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199903.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21210002210102 its reverse (20101220001212), we get a palindrome (41311222211314).

The spelling of 21210002210102 in words is "twenty-one trillion, two hundred ten billion, two million, two hundred ten thousand, one hundred two".