2220021101 has 2 divisors, whose sum is σ = 2220021102. Its totient is φ = 2220021100.

The previous prime is 2220021061. The next prime is 2220021121. The reversal of 2220021101 is 1011200222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2134902025 + 85119076 = 46205^2 + 9226^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220021101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220021121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110010550 + 1110010551.

It is an arithmetic number, because the mean of its divisors is an integer number (1110010551).

Almost surely, 2^2220021101 is an apocalyptic number.

It is an amenable number.

2220021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220021101 is an equidigital number, since it uses as much as digits as its factorization.

2220021101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2220021101 is about 47117.0998789187. The cubic root of 2220021101 is about 1304.5248831443.

Adding to 2220021101 its reverse (1011200222), we get a palindrome (3231221323).

The spelling of 2220021101 in words is "two billion, two hundred twenty million, twenty-one thousand, one hundred one".