21047522574012 has 48 divisors (see below), whose sum is σ = 53984485425024. Its totient is φ = 6329349832000.

The previous prime is 21047522573999. The next prime is 21047522574017.

21047522574012 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21047522574012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21047522574017) 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, 608574039 + ... + 608608622.

It is an arithmetic number, because the mean of its divisors is an integer number (1124676779688).

Almost surely, 2^{21047522574012} is an apocalyptic number.

21047522574012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21047522574012 is an abundant number, since it is smaller than the sum of its proper divisors (32936962851012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21047522574012 is a wasteful number, since it uses less digits than its factorization.

21047522574012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217182810 (or 1217182808 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 42.

It can be divided in two parts, 2104752 and 2574012, that added together give a palindrome (4678764).

The spelling of 21047522574012 in words is "twenty-one trillion, forty-seven billion, five hundred twenty-two million, five hundred seventy-four thousand, twelve".