422132132140021 has 4 divisors (see below), whose sum is σ = 424572202268172. Its totient is φ = 419692062011872.

The previous prime is 422132132139997. The next prime is 422132132140049. The reversal of 422132132140021 is 120041231231224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 190361651659921 + 231770480480100 = 13797161^2 + 15224010^2 .

It is a cyclic number.

It is not a de Polignac number, because 422132132140021 - 2¹⁷ = 422132132008949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422132132140721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220035063816 + ... + 1220035064161.

It is an arithmetic number, because the mean of its divisors is an integer number (106143050567043).

Almost surely, 2^{422132132140021} is an apocalyptic number.

It is an amenable number.

422132132140021 is a deficient number, since it is larger than the sum of its proper divisors (2440070128151).

422132132140021 is a wasteful number, since it uses less digits than its factorization.

422132132140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440070128150.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 422132132140021 its reverse (120041231231224), we get a palindrome (542173363371245).

The spelling of 422132132140021 in words is "four hundred twenty-two trillion, one hundred thirty-two billion, one hundred thirty-two million, one hundred forty thousand, twenty-one".