20420110422 has 32 divisors (see below), whose sum is σ = 48047320800. Its totient is φ = 6406308864.

The previous prime is 20420110387. The next prime is 20420110463. The reversal of 20420110422 is 22401102402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20420110395 and 20420110404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11121147 + ... + 11122982.

It is an arithmetic number, because the mean of its divisors is an integer number (1501478775).

Almost surely, 2^20420110422 is an apocalyptic number.

20420110422 is an abundant number, since it is smaller than the sum of its proper divisors (27627210378).

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

20420110422 is a wasteful number, since it uses less digits than its factorization.

20420110422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22244157 (or 22244151 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20420110422 its reverse (22401102402), we get a palindrome (42821212824).

The spelling of 20420110422 in words is "twenty billion, four hundred twenty million, one hundred ten thousand, four hundred twenty-two".