2222120101 has 4 divisors (see below), whose sum is σ = 2222397100. Its totient is φ = 2221843104.

The previous prime is 2222120081. The next prime is 2222120111. The reversal of 2222120101 is 1010212222.

It is a happy number.

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 834632100 + 1387488001 = 28890^2 + 37249^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222120101 - 2⁷ = 2222119973 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 (2222120111) 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, 126096 + ... + 142633.

It is an arithmetic number, because the mean of its divisors is an integer number (555599275).

Almost surely, 2^2222120101 is an apocalyptic number.

It is an amenable number.

2222120101 is a deficient number, since it is larger than the sum of its proper divisors (276999).

2222120101 is an equidigital number, since it uses as much as digits as its factorization.

2222120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276998.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2222120101 is about 47139.3689075278. The cubic root of 2222120101 is about 1304.9358905300.

Adding to 2222120101 its reverse (1010212222), we get a palindrome (3232332323).

The spelling of 2222120101 in words is "two billion, two hundred twenty-two million, one hundred twenty thousand, one hundred one".