22020101 has 4 divisors (see below), whose sum is σ = 22029600. Its totient is φ = 22010604.

The previous prime is 22020091. The next prime is 22020127. The reversal of 22020101 is 10102022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22020101 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1280 + ... + 6758.

It is an arithmetic number, because the mean of its divisors is an integer number (5507400).

Almost surely, 2^22020101 is an apocalyptic number.

It is an amenable number.

22020101 is a deficient number, since it is larger than the sum of its proper divisors (9499).

22020101 is an equidigital number, since it uses as much as digits as its factorization.

22020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9498.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 22020101 is about 4692.5580443933. The cubic root of 22020101 is about 280.2892461675.

Adding to 22020101 its reverse (10102022), we get a palindrome (32122123).

The spelling of 22020101 in words is "twenty-two million, twenty thousand, one hundred one".