20424200101 has 4 divisors (see below), whose sum is σ = 20433741804. Its totient is φ = 20414658400.

The previous prime is 20424200087. The next prime is 20424200107. The reversal of 20424200101 is 10100242402.

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 13301008900 + 7123191201 = 115330^2 + 84399^2 .

It is a cyclic number.

It is not a de Polignac number, because 20424200101 - 2²¹ = 20422102949 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 (20424200107) 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, 4767640 + ... + 4771921.

It is an arithmetic number, because the mean of its divisors is an integer number (5108435451).

Almost surely, 2^20424200101 is an apocalyptic number.

It is an amenable number.

20424200101 is a deficient number, since it is larger than the sum of its proper divisors (9541703).

20424200101 is an equidigital number, since it uses as much as digits as its factorization.

20424200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9541702.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20424200101 its reverse (10100242402), we get a palindrome (30524442503).

The spelling of 20424200101 in words is "twenty billion, four hundred twenty-four million, two hundred thousand, one hundred one".