20444004220422 has 32 divisors (see below), whose sum is σ = 43818876271872. Its totient is φ = 6342205773024.

The previous prime is 20444004220391. The next prime is 20444004220621. The reversal of 20444004220422 is 22402240044402.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20444004220422.

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, 2001953788 + ... + 2001963999.

It is an arithmetic number, because the mean of its divisors is an integer number (1369339883496).

Almost surely, 2^{20444004220422} is an apocalyptic number.

20444004220422 is an abundant number, since it is smaller than the sum of its proper divisors (23374872051450).

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

20444004220422 is a wasteful number, since it uses less digits than its factorization.

20444004220422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003917852.

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 20444004220422 its reverse (22402240044402), we get a palindrome (42846244264824).

The spelling of 20444004220422 in words is "twenty trillion, four hundred forty-four billion, four million, two hundred twenty thousand, four hundred twenty-two".