2221130101 has 4 divisors (see below), whose sum is σ = 2224754092. Its totient is φ = 2217506112.

The previous prime is 2221130099. The next prime is 2221130111. The reversal of 2221130101 is 1010311222.

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 976875025 + 1244255076 = 31255^2 + 35274^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221130101 - 2¹ = 2221130099 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 (2221130111) 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, 1811076 + ... + 1812301.

It is an arithmetic number, because the mean of its divisors is an integer number (556188523).

Almost surely, 2^2221130101 is an apocalyptic number.

It is an amenable number.

2221130101 is a deficient number, since it is larger than the sum of its proper divisors (3623991).

2221130101 is an equidigital number, since it uses as much as digits as its factorization.

2221130101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623990.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2221130101 is about 47128.8669607068. The cubic root of 2221130101 is about 1304.7420698581.

Adding to 2221130101 its reverse (1010311222), we get a palindrome (3231441323).

The spelling of 2221130101 in words is "two billion, two hundred twenty-one million, one hundred thirty thousand, one hundred one".