21602422132055 has 4 divisors (see below), whose sum is σ = 25922906558472. Its totient is φ = 17281937705640.

The previous prime is 21602422132013. The next prime is 21602422132063. The reversal of 21602422132055 is 55023122420612.

It is a happy number.

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

It is not a de Polignac number, because 21602422132055 - 2⁶ = 21602422131991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2160242213201 + ... + 2160242213210.

It is an arithmetic number, because the mean of its divisors is an integer number (6480726639618).

Almost surely, 2^{21602422132055} is an apocalyptic number.

21602422132055 is a deficient number, since it is larger than the sum of its proper divisors (4320484426417).

21602422132055 is an equidigital number, since it uses as much as digits as its factorization.

21602422132055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4320484426416.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 21602422132055 its reverse (55023122420612), we get a palindrome (76625544552667).

The spelling of 21602422132055 in words is "twenty-one trillion, six hundred two billion, four hundred twenty-two million, one hundred thirty-two thousand, fifty-five".