20402330422 has 4 divisors (see below), whose sum is σ = 30603495636. Its totient is φ = 10201165210.

The previous prime is 20402330407. The next prime is 20402330423. The reversal of 20402330422 is 22403320402.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 20402330393 and 20402330402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402330423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100582604 + ... + 5100582607.

It is an arithmetic number, because the mean of its divisors is an integer number (7650873909).

Almost surely, 2^20402330422 is an apocalyptic number.

20402330422 is a deficient number, since it is larger than the sum of its proper divisors (10201165214).

20402330422 is a wasteful number, since it uses less digits than its factorization.

20402330422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10201165213.

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 20402330422 its reverse (22403320402), we get a palindrome (42805650824).

The spelling of 20402330422 in words is "twenty billion, four hundred two million, three hundred thirty thousand, four hundred twenty-two".