21445054412 has 6 divisors (see below), whose sum is σ = 37528845228. Its totient is φ = 10722527204.

The previous prime is 21445054399. The next prime is 21445054417.

21445054412 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (21445054417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2680631798 + ... + 2680631805.

It is an arithmetic number, because the mean of its divisors is an integer number (6254807538).

Almost surely, 2^21445054412 is an apocalyptic number.

It is an amenable number.

21445054412 is a deficient number, since it is larger than the sum of its proper divisors (16083790816).

21445054412 is a wasteful number, since it uses less digits than its factorization.

21445054412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5361263607 (or 5361263605 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

It can be divided in two parts, 214450 and 54412, that added together give a palindrome (268862).

The spelling of 21445054412 in words is "twenty-one billion, four hundred forty-five million, fifty-four thousand, four hundred twelve".