21344422342 has 8 divisors (see below), whose sum is σ = 32017293000. Its totient is φ = 10671991344.

The previous prime is 21344422279. The next prime is 21344422391. The reversal of 21344422342 is 24322444312.

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

It is a super-2 number, since 2×21344422342² (a number of 21 digits) contains 22 as substring.

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, 71034 + ... + 218482.

It is an arithmetic number, because the mean of its divisors is an integer number (4002161625).

Almost surely, 2^21344422342 is an apocalyptic number.

21344422342 is a deficient number, since it is larger than the sum of its proper divisors (10672870658).

21344422342 is a wasteful number, since it uses less digits than its factorization.

21344422342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219830.

The product of its digits is 36864, while the sum is 31.

Adding to 21344422342 its reverse (24322444312), we get a palindrome (45666866654).

The spelling of 21344422342 in words is "twenty-one billion, three hundred forty-four million, four hundred twenty-two thousand, three hundred forty-two".