20212100422 has 8 divisors (see below), whose sum is σ = 30319144416. Its totient is φ = 10105718952.

The previous prime is 20212100417. The next prime is 20212100429. The reversal of 20212100422 is 22400121202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20212100396 and 20212100405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212100429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80638 + ... + 216625.

It is an arithmetic number, because the mean of its divisors is an integer number (3789893052).

Almost surely, 2^20212100422 is an apocalyptic number.

20212100422 is a deficient number, since it is larger than the sum of its proper divisors (10107043994).

20212100422 is a wasteful number, since it uses less digits than its factorization.

20212100422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331262.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20212100422 its reverse (22400121202), we get a palindrome (42612221624).

The spelling of 20212100422 in words is "twenty billion, two hundred twelve million, one hundred thousand, four hundred twenty-two".