21440433330212 has 48 divisors (see below), whose sum is σ = 40551240476544. Its totient is φ = 9860285952000.

The previous prime is 21440433330181. The next prime is 21440433330223. The reversal of 21440433330212 is 21203333404412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31175012 + ... + 31855332.

It is an arithmetic number, because the mean of its divisors is an integer number (844817509928).

Almost surely, 2^{21440433330212} is an apocalyptic number.

It is an amenable number.

21440433330212 is a deficient number, since it is larger than the sum of its proper divisors (19110807146332).

21440433330212 is a wasteful number, since it uses less digits than its factorization.

21440433330212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682500 (or 682498 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 21440433330212 its reverse (21203333404412), we get a palindrome (42643766734624).

The spelling of 21440433330212 in words is "twenty-one trillion, four hundred forty billion, four hundred thirty-three million, three hundred thirty thousand, two hundred twelve".