21210200002002 has 16 divisors (see below), whose sum is σ = 46276800004512. Its totient is φ = 6427333333920.

The previous prime is 21210200001919. The next prime is 21210200002021. The reversal of 21210200002002 is 20020000201212.

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, 160683333283 + ... + 160683333414.

It is an arithmetic number, because the mean of its divisors is an integer number (2892300000282).

Almost surely, 2^{21210200002002} is an apocalyptic number.

21210200002002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21210200002002 is an abundant number, since it is smaller than the sum of its proper divisors (25066600002510).

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

21210200002002 is a wasteful number, since it uses less digits than its factorization.

21210200002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321366666713.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21210200002002 its reverse (20020000201212), we get a palindrome (41230200203214).

The spelling of 21210200002002 in words is "twenty-one trillion, two hundred ten billion, two hundred million, two thousand, two".