21422546101 has 4 divisors (see below), whose sum is σ = 23370050304. Its totient is φ = 19475041900.

The previous prime is 21422546083. The next prime is 21422546129. The reversal of 21422546101 is 10164522412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21422546101 - 2²⁵ = 21388991669 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21422546101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422846101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973752085 + ... + 973752106.

It is an arithmetic number, because the mean of its divisors is an integer number (5842512576).

Almost surely, 2^21422546101 is an apocalyptic number.

It is an amenable number.

21422546101 is a deficient number, since it is larger than the sum of its proper divisors (1947504203).

21422546101 is a wasteful number, since it uses less digits than its factorization.

21422546101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947504202.

The product of its (nonzero) digits is 3840, while the sum is 28.

The spelling of 21422546101 in words is "twenty-one billion, four hundred twenty-two million, five hundred forty-six thousand, one hundred one".