212202022122101 has 4 divisors (see below), whose sum is σ = 231493115042304. Its totient is φ = 192910929201900.

The previous prime is 212202022122047. The next prime is 212202022122127. The reversal of 212202022122101 is 101221220202212.

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-212202022122101 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 (212202022128101) by changing a digit.

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, 9645546460085 + ... + 9645546460106.

It is an arithmetic number, because the mean of its divisors is an integer number (57873278760576).

Almost surely, 2^{212202022122101} is an apocalyptic number.

It is an amenable number.

212202022122101 is a deficient number, since it is larger than the sum of its proper divisors (19291092920203).

212202022122101 is a wasteful number, since it uses less digits than its factorization.

212202022122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19291092920202.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212202022122101 its reverse (101221220202212), we get a palindrome (313423242324313).

The spelling of 212202022122101 in words is "two hundred twelve trillion, two hundred two billion, twenty-two million, one hundred twenty-two thousand, one hundred one".