212202121110101 has 4 divisors (see below), whose sum is σ = 212202351652704. Its totient is φ = 212201890567500.

The previous prime is 212202121110013. The next prime is 212202121110121. The reversal of 212202121110101 is 101011121202212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212202121110101 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 212202121110101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212202121110121) 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, 113885075 + ... + 115733376.

It is an arithmetic number, because the mean of its divisors is an integer number (53050587913176).

Almost surely, 2^{212202121110101} is an apocalyptic number.

It is an amenable number.

212202121110101 is a deficient number, since it is larger than the sum of its proper divisors (230542603).

212202121110101 is an equidigital number, since it uses as much as digits as its factorization.

212202121110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230542602.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212202121110101 its reverse (101011121202212), we get a palindrome (313213242312313).

The spelling of 212202121110101 in words is "two hundred twelve trillion, two hundred two billion, one hundred twenty-one million, one hundred ten thousand, one hundred one".