21422312013443 has 16 divisors (see below), whose sum is σ = 23830316819712. Its totient is φ = 19094804940000.

The previous prime is 21422312013439. The next prime is 21422312013461. The reversal of 21422312013443 is 34431021322412.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21422312013443 - 2² = 21422312013439 is a prime.

It is a super-2 number, since 2×21422312013443² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21422312013143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93487553 + ... + 93716418.

It is an arithmetic number, because the mean of its divisors is an integer number (1489394801232).

Almost surely, 2^{21422312013443} is an apocalyptic number.

21422312013443 is a deficient number, since it is larger than the sum of its proper divisors (2408004806269).

21422312013443 is a wasteful number, since it uses less digits than its factorization.

21422312013443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187204186.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21422312013443 its reverse (34431021322412), we get a palindrome (55853333335855).

The spelling of 21422312013443 in words is "twenty-one trillion, four hundred twenty-two billion, three hundred twelve million, thirteen thousand, four hundred forty-three".