21210002122202 has 8 divisors (see below), whose sum is σ = 32065515019776. Its totient is φ = 10521497115612.

The previous prime is 21210002122189. The next prime is 21210002122241. The reversal of 21210002122202 is 20222120001212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41751972428 + ... + 41751972935.

It is an arithmetic number, because the mean of its divisors is an integer number (4008189377472).

Almost surely, 2^{21210002122202} is an apocalyptic number.

21210002122202 is a deficient number, since it is larger than the sum of its proper divisors (10855512897574).

21210002122202 is a wasteful number, since it uses less digits than its factorization.

21210002122202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83503945492.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21210002122202 its reverse (20222120001212), we get a palindrome (41432122123414).

The spelling of 21210002122202 in words is "twenty-one trillion, two hundred ten billion, two million, one hundred twenty-two thousand, two hundred two".