202212102212101 has 4 divisors (see below), whose sum is σ = 202609375497900. Its totient is φ = 201814828926304.

The previous prime is 202212102212039. The next prime is 202212102212111. The reversal of 202212102212101 is 101212201212202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 183765163112001 + 18446939100100 = 13556001^2 + 4294990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202212102212101 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 (202212102212111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198636642136 + ... + 198636643153.

It is an arithmetic number, because the mean of its divisors is an integer number (50652343874475).

Almost surely, 2^{202212102212101} is an apocalyptic number.

It is an amenable number.

202212102212101 is a deficient number, since it is larger than the sum of its proper divisors (397273285799).

202212102212101 is an equidigital number, since it uses as much as digits as its factorization.

202212102212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397273285798.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 202212102212101 its reverse (101212201212202), we get a palindrome (303424303424303).

The spelling of 202212102212101 in words is "two hundred two trillion, two hundred twelve billion, one hundred two million, two hundred twelve thousand, one hundred one".