21342744724312 has 16 divisors (see below), whose sum is σ = 43655614209000. Its totient is φ = 9701247601920.

The previous prime is 21342744724267. The next prime is 21342744724337.

21342744724312 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121265594937 + ... + 121265595112.

Almost surely, 2^{21342744724312} is an apocalyptic number.

21342744724312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21342744724312 is an abundant number, since it is smaller than the sum of its proper divisors (22312869484688).

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

21342744724312 is a wasteful number, since it uses less digits than its factorization.

21342744724312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242531190066 (or 242531190062 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 46.

It can be divided in two parts, 2134274 and 4724312, that added together give a palindrome (6858586).

The spelling of 21342744724312 in words is "twenty-one trillion, three hundred forty-two billion, seven hundred forty-four million, seven hundred twenty-four thousand, three hundred twelve".