21422405175 has 12 divisors (see below), whose sum is σ = 35418376680. Its totient is φ = 11425282720.

The previous prime is 21422405113. The next prime is 21422405189. The reversal of 21422405175 is 57150422412.

It is not a de Polignac number, because 21422405175 - 2¹⁶ = 21422339639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142815960 + ... + 142816109.

It is an arithmetic number, because the mean of its divisors is an integer number (2951531390).

Almost surely, 2^21422405175 is an apocalyptic number.

21422405175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21422405175 is a deficient number, since it is larger than the sum of its proper divisors (13995971505).

21422405175 is a wasteful number, since it uses less digits than its factorization.

21422405175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285632082 (or 285632077 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

Adding to 21422405175 its reverse (57150422412), we get a palindrome (78572827587).

The spelling of 21422405175 in words is "twenty-one billion, four hundred twenty-two million, four hundred five thousand, one hundred seventy-five".