212122221101 has 8 divisors (see below), whose sum is σ = 242428256064. Its totient is φ = 181816901280.

The previous prime is 212122221089. The next prime is 212122221149. The reversal of 212122221101 is 101122221212.

212122221101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212122221101 - 2³⁰ = 211048479277 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 212122221101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122221401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 856526 + ... + 1076048.

It is an arithmetic number, because the mean of its divisors is an integer number (30303532008).

Almost surely, 2^212122221101 is an apocalyptic number.

It is an amenable number.

212122221101 is a deficient number, since it is larger than the sum of its proper divisors (30306034963).

212122221101 is a wasteful number, since it uses less digits than its factorization.

212122221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357571.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212122221101 its reverse (101122221212), we get a palindrome (313244442313).

The spelling of 212122221101 in words is "two hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred one".