212221101101 has 4 divisors (see below), whose sum is σ = 219066943104. Its totient is φ = 205375259100.

The previous prime is 212221101047. The next prime is 212221101109. The reversal of 212221101101 is 101101122212.

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 not a de Polignac number, because 212221101101 - 2¹⁴ = 212221084717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221101109) 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 3 ways as a sum of consecutive naturals, for example, 3422920955 + ... + 3422921016.

It is an arithmetic number, because the mean of its divisors is an integer number (54766735776).

Almost surely, 2^212221101101 is an apocalyptic number.

It is an amenable number.

212221101101 is a deficient number, since it is larger than the sum of its proper divisors (6845842003).

212221101101 is an equidigital number, since it uses as much as digits as its factorization.

212221101101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6845842002.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212221101101 its reverse (101101122212), we get a palindrome (313322223313).

The spelling of 212221101101 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred one thousand, one hundred one".