21622135607371 has 8 divisors (see below), whose sum is σ = 23286170885040. Its totient is φ = 19958213769312.

The previous prime is 21622135607333. The next prime is 21622135607411. The reversal of 21622135607371 is 17370653122612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21622135607371 - 2⁹ = 21622135606859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21622135607311) 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, 27963820 + ... + 28726633.

It is an arithmetic number, because the mean of its divisors is an integer number (2910771360630).

Almost surely, 2^{21622135607371} is an apocalyptic number.

21622135607371 is a deficient number, since it is larger than the sum of its proper divisors (1664035277669).

21622135607371 is a wasteful number, since it uses less digits than its factorization.

21622135607371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56719805.

The product of its (nonzero) digits is 635040, while the sum is 46.

Adding to 21622135607371 its reverse (17370653122612), we get a palindrome (38992788729983).

The spelling of 21622135607371 in words is "twenty-one trillion, six hundred twenty-two billion, one hundred thirty-five million, six hundred seven thousand, three hundred seventy-one".