20423445212422 has 16 divisors (see below), whose sum is σ = 35039924048160. Its totient is φ = 8745829170048.

The previous prime is 20423445212413. The next prime is 20423445212449. The reversal of 20423445212422 is 22421254432402.

It is a super-2 number, since 2×20423445212422² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589642147 + ... + 589676782.

It is an arithmetic number, because the mean of its divisors is an integer number (2189995253010).

Almost surely, 2^{20423445212422} is an apocalyptic number.

20423445212422 is a deficient number, since it is larger than the sum of its proper divisors (14616478835738).

20423445212422 is a wasteful number, since it uses less digits than its factorization.

20423445212422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179320175.

The product of its (nonzero) digits is 245760, while the sum is 37.

Adding to 20423445212422 its reverse (22421254432402), we get a palindrome (42844699644824).

The spelling of 20423445212422 in words is "twenty trillion, four hundred twenty-three billion, four hundred forty-five million, two hundred twelve thousand, four hundred twenty-two".