2212222122101 has 4 divisors (see below), whose sum is σ = 2216311257804. Its totient is φ = 2208132986400.

The previous prime is 2212222122059. The next prime is 2212222122113. The reversal of 2212222122101 is 1012212222122.

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 913075802500 + 1299146319601 = 955550^2 + 1139801^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212222122101 - 2¹⁰ = 2212222121077 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 (2212222122151) 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 3 ways as a sum of consecutive naturals, for example, 2044567040 + ... + 2044568121.

It is an arithmetic number, because the mean of its divisors is an integer number (554077814451).

Almost surely, 2^{2212222122101} is an apocalyptic number.

It is an amenable number.

2212222122101 is a deficient number, since it is larger than the sum of its proper divisors (4089135703).

2212222122101 is an equidigital number, since it uses as much as digits as its factorization.

2212222122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4089135702.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2212222122101 its reverse (1012212222122), we get a palindrome (3224434344223).

It can be divided in two parts, 2212222122 and 101, that multiplied together give a palindrome (223434434322).

The spelling of 2212222122101 in words is "two trillion, two hundred twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred one".