212211120221101 has 8 divisors (see below), whose sum is σ = 212351586572664. Its totient is φ = 212070674649600.

The previous prime is 212211120221063. The next prime is 212211120221159. The reversal of 212211120221101 is 101122021112212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31070880663876 + 181140239557225 = 5574126^2 + 13458835^2 .

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 212211120221101 - 2⁷ = 212211120220973 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 (212211120227101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15262885 + ... + 25639381.

It is an arithmetic number, because the mean of its divisors is an integer number (26543948321583).

Almost surely, 2^{212211120221101} is an apocalyptic number.

It is an amenable number.

212211120221101 is a deficient number, since it is larger than the sum of its proper divisors (140466351563).

212211120221101 is a wasteful number, since it uses less digits than its factorization.

212211120221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10390031.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212211120221101 its reverse (101122021112212), we get a palindrome (313333141333313).

The spelling of 212211120221101 in words is "two hundred twelve trillion, two hundred eleven billion, one hundred twenty million, two hundred twenty-one thousand, one hundred one".