21444222310312 has 32 divisors (see below), whose sum is σ = 40236621235200. Its totient is φ = 10714457882304.

The previous prime is 21444222310289. The next prime is 21444222310321. The reversal of 21444222310312 is 21301322244412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152131738 + ... + 152272630.

It is an arithmetic number, because the mean of its divisors is an integer number (1257394413600).

Almost surely, 2^{21444222310312} is an apocalyptic number.

It is an amenable number.

21444222310312 is a deficient number, since it is larger than the sum of its proper divisors (18792398924888).

21444222310312 is a wasteful number, since it uses less digits than its factorization.

21444222310312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154345 (or 154341 counting only the distinct ones).

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

Adding to 21444222310312 its reverse (21301322244412), we get a palindrome (42745544554724).

The spelling of 21444222310312 in words is "twenty-one trillion, four hundred forty-four billion, two hundred twenty-two million, three hundred ten thousand, three hundred twelve".