21422312013442 has 8 divisors (see below), whose sum is σ = 32917211142732. Its totient is φ = 10449908299200.

The previous prime is 21422312013439. The next prime is 21422312013461. The reversal of 21422312013442 is 24431021322412.

It can be written as a sum of positive squares in 2 ways, for example, as 20664470380761 + 757841632681 = 4545819^2 + 870541^2 .

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

It is a super-2 number, since 2×21422312013442² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130623853659 + ... + 130623853822.

Almost surely, 2^{21422312013442} is an apocalyptic number.

21422312013442 is a deficient number, since it is larger than the sum of its proper divisors (11494899129290).

21422312013442 is a wasteful number, since it uses less digits than its factorization.

21422312013442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261247707524.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 21422312013442 its reverse (24431021322412), we get a palindrome (45853333335854).

The spelling of 21422312013442 in words is "twenty-one trillion, four hundred twenty-two billion, three hundred twelve million, thirteen thousand, four hundred forty-two".