21445133154412 has 24 divisors (see below), whose sum is σ = 42261376776192. Its totient is φ = 9433343029200.

The previous prime is 21445133154409. The next prime is 21445133154427.

21445133154412 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7861117828 + ... + 7861120555.

It is an arithmetic number, because the mean of its divisors is an integer number (1760890699008).

Almost surely, 2^{21445133154412} is an apocalyptic number.

21445133154412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21445133154412 is a deficient number, since it is larger than the sum of its proper divisors (20816243621780).

21445133154412 is a wasteful number, since it uses less digits than its factorization.

21445133154412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15722238429 (or 15722238427 counting only the distinct ones).

The product of its digits is 230400, while the sum is 40.

It can be divided in two parts, 2144513 and 3154412, that added together give a palindrome (5298925).

The spelling of 21445133154412 in words is "twenty-one trillion, four hundred forty-five billion, one hundred thirty-three million, one hundred fifty-four thousand, four hundred twelve".