20402141421422 has 16 divisors (see below), whose sum is σ = 33279168679920. Its totient is φ = 9341521031808.

The previous prime is 20402141421421. The next prime is 20402141421451. The reversal of 20402141421422 is 22412414120402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402141421421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8108957972 + ... + 8108960487.

It is an arithmetic number, because the mean of its divisors is an integer number (2079948042495).

Almost surely, 2^{20402141421422} is an apocalyptic number.

20402141421422 is a deficient number, since it is larger than the sum of its proper divisors (12877027258498).

20402141421422 is a wasteful number, since it uses less digits than its factorization.

20402141421422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16217918515.

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 20402141421422 its reverse (22412414120402), we get a palindrome (42814555541824).

The spelling of 20402141421422 in words is "twenty trillion, four hundred two billion, one hundred forty-one million, four hundred twenty-one thousand, four hundred twenty-two".