20442221012404 has 6 divisors (see below), whose sum is σ = 35773886771714. Its totient is φ = 10221110506200.

The previous prime is 20442221012363. The next prime is 20442221012429. The reversal of 20442221012404 is 40421012224402.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20313067028004 + 129153984400 = 4507002^2 + 359380^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555277626547 + ... + 2555277626554.

Almost surely, 2^{20442221012404} is an apocalyptic number.

It is an amenable number.

20442221012404 is a deficient number, since it is larger than the sum of its proper divisors (15331665759310).

20442221012404 is a wasteful number, since it uses less digits than its factorization.

20442221012404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110555253105 (or 5110555253103 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 20442221012404 its reverse (40421012224402), we get a palindrome (60863233236806).

The spelling of 20442221012404 in words is "twenty trillion, four hundred forty-two billion, two hundred twenty-one million, twelve thousand, four hundred four".