21342344324312 has 32 divisors (see below), whose sum is σ = 43812393797520. Its totient is φ = 9666043693440.

The previous prime is 21342344324303. The next prime is 21342344324321.

21342344324312 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (21342344324303) and next prime (21342344324321).

It is a super-2 number, since 2×21342344324312² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437749343 + ... + 437798094.

Almost surely, 2^{21342344324312} is an apocalyptic number.

21342344324312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21342344324312 is an abundant number, since it is smaller than the sum of its proper divisors (22470049473208).

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

21342344324312 is a wasteful number, since it uses less digits than its factorization.

21342344324312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875547731 (or 875547727 counting only the distinct ones).

The product of its digits is 331776, while the sum is 38.

It can be divided in two parts, 2134234 and 4324312, that added together give a palindrome (6458546).

The spelling of 21342344324312 in words is "twenty-one trillion, three hundred forty-two billion, three hundred forty-four million, three hundred twenty-four thousand, three hundred twelve".