21344422101 has 32 divisors (see below), whose sum is σ = 30045351168. Its totient is φ = 13460405760.

The previous prime is 21344422079. The next prime is 21344422111. The reversal of 21344422101 is 10122444312.

It is not a de Polignac number, because 21344422101 - 2⁹ = 21344421589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344422111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1325440 + ... + 1341446.

It is an arithmetic number, because the mean of its divisors is an integer number (938917224).

Almost surely, 2^21344422101 is an apocalyptic number.

It is an amenable number.

21344422101 is a deficient number, since it is larger than the sum of its proper divisors (8700929067).

21344422101 is a wasteful number, since it uses less digits than its factorization.

21344422101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16381.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21344422101 its reverse (10122444312), we get a palindrome (31466866413).

The spelling of 21344422101 in words is "twenty-one billion, three hundred forty-four million, four hundred twenty-two thousand, one hundred one".