202100002212221 has 8 divisors (see below), whose sum is σ = 207546572681184. Its totient is φ = 196687366762320.

The previous prime is 202100002212209. The next prime is 202100002212299. The reversal of 202100002212221 is 122212200001202.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202100002212221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202100002212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202100002214221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8483742695 + ... + 8483766516.

It is an arithmetic number, because the mean of its divisors is an integer number (25943321585148).

Almost surely, 2^{202100002212221} is an apocalyptic number.

It is an amenable number.

202100002212221 is a deficient number, since it is larger than the sum of its proper divisors (5446570468963).

202100002212221 is a wasteful number, since it uses less digits than its factorization.

202100002212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16967509531.

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

Adding to 202100002212221 its reverse (122212200001202), we get a palindrome (324312202213423).

The spelling of 202100002212221 in words is "two hundred two trillion, one hundred billion, two million, two hundred twelve thousand, two hundred twenty-one".