20442424111 has 16 divisors (see below), whose sum is σ = 21058133824. Its totient is φ = 19838317824.

The previous prime is 20442424097. The next prime is 20442424117. The reversal of 20442424111 is 11142424402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20442424111 - 2³¹ = 18294940463 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 (20442424117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1171825 + ... + 1189141.

It is an arithmetic number, because the mean of its divisors is an integer number (1316133364).

Almost surely, 2^20442424111 is an apocalyptic number.

20442424111 is a deficient number, since it is larger than the sum of its proper divisors (615709713).

20442424111 is a wasteful number, since it uses less digits than its factorization.

20442424111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17650.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 20442424111 its reverse (11142424402), we get a palindrome (31584848513).

The spelling of 20442424111 in words is "twenty billion, four hundred forty-two million, four hundred twenty-four thousand, one hundred eleven".