20434224111 has 32 divisors (see below), whose sum is σ = 33091319808. Its totient is φ = 10949230080.

The previous prime is 20434224067. The next prime is 20434224131. The reversal of 20434224111 is 11142243402.

It is not a de Polignac number, because 20434224111 - 2¹⁹ = 20433699823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434224131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8860 + ... + 202353.

It is an arithmetic number, because the mean of its divisors is an integer number (1034103744).

Almost surely, 2^20434224111 is an apocalyptic number.

20434224111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20434224111 is a deficient number, since it is larger than the sum of its proper divisors (12657095697).

20434224111 is a wasteful number, since it uses less digits than its factorization.

20434224111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211511.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 20434224111 its reverse (11142243402), we get a palindrome (31576467513).

The spelling of 20434224111 in words is "twenty billion, four hundred thirty-four million, two hundred twenty-four thousand, one hundred eleven".