212222221211101 has 8 divisors (see below), whose sum is σ = 221713894474200. Its totient is φ = 202875458990400.

The previous prime is 212222221211089. The next prime is 212222221211107. The reversal of 212222221211101 is 101112122222212.

It can be written as a sum of positive squares in 4 ways, for example, as 80254740167001 + 131967481044100 = 8958501^2 + 11487710^2 .

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 212222221211101 - 2⁵ = 212222221211069 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 (212222221211107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36227757606 + ... + 36227763463.

It is an arithmetic number, because the mean of its divisors is an integer number (27714236809275).

Almost surely, 2^{212222221211101} is an apocalyptic number.

It is an amenable number.

212222221211101 is a deficient number, since it is larger than the sum of its proper divisors (9491673263099).

212222221211101 is a wasteful number, since it uses less digits than its factorization.

212222221211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72455521199.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 212222221211101 its reverse (101112122222212), we get a palindrome (313334343433313).

The spelling of 212222221211101 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred eleven thousand, one hundred one".