20110442101 has 4 divisors (see below), whose sum is σ = 20114867500. Its totient is φ = 20106016704.

The previous prime is 20110442071. The next prime is 20110442113. The reversal of 20110442101 is 10124401102.

It is a happy number.

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 11962671876 + 8147770225 = 109374^2 + 90265^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110442101 - 2¹³ = 20110433909 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 (20110442201) 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, 2205876 + ... + 2214973.

It is an arithmetic number, because the mean of its divisors is an integer number (5028716875).

Almost surely, 2^20110442101 is an apocalyptic number.

It is an amenable number.

20110442101 is a deficient number, since it is larger than the sum of its proper divisors (4425399).

20110442101 is an equidigital number, since it uses as much as digits as its factorization.

20110442101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425398.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20110442101 its reverse (10124401102), we get a palindrome (30234843203).

The spelling of 20110442101 in words is "twenty billion, one hundred ten million, four hundred forty-two thousand, one hundred one".