20423212004442 has 64 divisors (see below), whose sum is σ = 47232013296384. Its totient is φ = 5831112698880.

The previous prime is 20423212004407. The next prime is 20423212004473. The reversal of 20423212004442 is 24440021232402.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108371493 + ... + 108559784.

It is an arithmetic number, because the mean of its divisors is an integer number (738000207756).

Almost surely, 2^{20423212004442} is an apocalyptic number.

20423212004442 is an abundant number, since it is smaller than the sum of its proper divisors (26808801291942).

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

20423212004442 is a wasteful number, since it uses less digits than its factorization.

20423212004442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216931383.

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 20423212004442 its reverse (24440021232402), we get a palindrome (44863233236844).

The spelling of 20423212004442 in words is "twenty trillion, four hundred twenty-three billion, two hundred twelve million, four thousand, four hundred forty-two".