212222222211101 has 4 divisors (see below), whose sum is σ = 212222293330812. Its totient is φ = 212222151091392.

The previous prime is 212222222211023. The next prime is 212222222211157. The reversal of 212222222211101 is 101112222222212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57123817480900 + 155098404730201 = 7558030^2 + 12453851^2 .

It is a cyclic number.

It is not a de Polignac number, because 212222222211101 - 2¹⁰ = 212222222210077 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 (212222222211161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30878396 + ... + 37120341.

It is an arithmetic number, because the mean of its divisors is an integer number (53055573332703).

Almost surely, 2^{212222222211101} is an apocalyptic number.

It is an amenable number.

212222222211101 is a deficient number, since it is larger than the sum of its proper divisors (71119711).

212222222211101 is an equidigital number, since it uses as much as digits as its factorization.

212222222211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71119710.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 212222222211101 its reverse (101112222222212), we get a palindrome (313334444433313).

The spelling of 212222222211101 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred eleven thousand, one hundred one".