20434331022 has 64 divisors (see below), whose sum is σ = 47589703680. Its totient is φ = 5728960224.

The previous prime is 20434331003. The next prime is 20434331023. The reversal of 20434331022 is 22013343402.

It is a junction number, because it is equal to n+sod(n) for n = 20434330983 and 20434331001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434331023) 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, 521943 + ... + 559725.

It is an arithmetic number, because the mean of its divisors is an integer number (743589120).

Almost surely, 2^20434331022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20434331022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23794851840).

20434331022 is an abundant number, since it is smaller than the sum of its proper divisors (27155372658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20434331022 is a wasteful number, since it uses less digits than its factorization.

20434331022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38037.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20434331022 its reverse (22013343402), we get a palindrome (42447674424).

The spelling of 20434331022 in words is "twenty billion, four hundred thirty-four million, three hundred thirty-one thousand, twenty-two".