20042422401081 has 16 divisors (see below), whose sum is σ = 29784404808000. Its totient is φ = 11913761922048.

The previous prime is 20042422401061. The next prime is 20042422401083. The reversal of 20042422401081 is 18010422424002.

It is a happy number.

It is not a de Polignac number, because 20042422401081 - 2⁵ = 20042422401049 is a prime.

It is a super-2 number, since 2×20042422401081² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20042422401083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10341806256 + ... + 10341808193.

It is an arithmetic number, because the mean of its divisors is an integer number (1861525300500).

Almost surely, 2^{20042422401081} is an apocalyptic number.

It is an amenable number.

20042422401081 is a deficient number, since it is larger than the sum of its proper divisors (9741982406919).

20042422401081 is a wasteful number, since it uses less digits than its factorization.

20042422401081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20683614488.

The product of its (nonzero) digits is 8192, while the sum is 30.

Adding to 20042422401081 its reverse (18010422424002), we get a palindrome (38052844825083).

The spelling of 20042422401081 in words is "twenty trillion, forty-two billion, four hundred twenty-two million, four hundred one thousand, eighty-one".