21210212002002 has 32 divisors (see below), whose sum is σ = 43267424616000. Its totient is φ = 6929615067648.

The previous prime is 21210212001971. The next prime is 21210212002033. The reversal of 21210212002002 is 20020021201212.

It is an interprime number because it is at equal distance from previous prime (21210212001971) and next prime (21210212002033).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88776627 + ... + 89015222.

It is an arithmetic number, because the mean of its divisors is an integer number (1352107019250).

Almost surely, 2^{21210212002002} is an apocalyptic number.

21210212002002 is an abundant number, since it is smaller than the sum of its proper divisors (22057212613998).

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

21210212002002 is a wasteful number, since it uses less digits than its factorization.

21210212002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177792250.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21210212002002 its reverse (20020021201212), we get a palindrome (41230233203214).

The spelling of 21210212002002 in words is "twenty-one trillion, two hundred ten billion, two hundred twelve million, two thousand, two".