202110021212213 has 8 divisors (see below), whose sum is σ = 219218330038680. Its totient is φ = 185581655057920.

The previous prime is 202110021212201. The next prime is 202110021212249. The reversal of 202110021212213 is 312212120011202.

It can be written as a sum of positive squares in 4 ways, for example, as 10093627640209 + 192016393572004 = 3177047^2 + 13856998^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 202110021212213 - 2⁸ = 202110021211957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202110021212293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144985667318 + ... + 144985668711.

It is an arithmetic number, because the mean of its divisors is an integer number (27402291254835).

Almost surely, 2^{202110021212213} is an apocalyptic number.

It is an amenable number.

202110021212213 is a deficient number, since it is larger than the sum of its proper divisors (17108308826467).

202110021212213 is a wasteful number, since it uses less digits than its factorization.

202110021212213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289971336087.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 202110021212213 its reverse (312212120011202), we get a palindrome (514322141223415).

The spelling of 202110021212213 in words is "two hundred two trillion, one hundred ten billion, twenty-one million, two hundred twelve thousand, two hundred thirteen".