22520420101 has 4 divisors (see below), whose sum is σ = 22529833452. Its totient is φ = 22511006752.

The previous prime is 22520420093. The next prime is 22520420107. The reversal of 22520420101 is 10102402522.

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 5846896225 + 16673523876 = 76465^2 + 129126^2 .

It is a cyclic number.

It is not a de Polignac number, because 22520420101 - 2³ = 22520420093 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 (22520420107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4703086 + ... + 4707871.

It is an arithmetic number, because the mean of its divisors is an integer number (5632458363).

Almost surely, 2^22520420101 is an apocalyptic number.

It is an amenable number.

22520420101 is a deficient number, since it is larger than the sum of its proper divisors (9413351).

22520420101 is an equidigital number, since it uses as much as digits as its factorization.

22520420101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9413350.

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 22520420101 its reverse (10102402522), we get a palindrome (32622822623).

The spelling of 22520420101 in words is "twenty-two billion, five hundred twenty million, four hundred twenty thousand, one hundred one".