21210200121202 has 8 divisors (see below), whose sum is σ = 32218025500800. Its totient is φ = 10470858287604.

The previous prime is 21210200121191. The next prime is 21210200121251. The reversal of 21210200121202 is 20212100201212.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67120886302 + ... + 67120886617.

It is an arithmetic number, because the mean of its divisors is an integer number (4027253187600).

Almost surely, 2^{21210200121202} is an apocalyptic number.

21210200121202 is a deficient number, since it is larger than the sum of its proper divisors (11007825379598).

21210200121202 is a wasteful number, since it uses less digits than its factorization.

21210200121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134241773000.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21210200121202 its reverse (20212100201212), we get a palindrome (41422300322414).

The spelling of 21210200121202 in words is "twenty-one trillion, two hundred ten billion, two hundred million, one hundred twenty-one thousand, two hundred two".