21412343412 has 48 divisors (see below), whose sum is σ = 55582329600. Its totient is φ = 7128596160.

The previous prime is 21412343411. The next prime is 21412343431. The reversal of 21412343412 is 21434321412.

21412343412 is a `hidden beast` number, since 2 + 14 + 1 + 234 + 3 + 412 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21412343411) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 35164 + ... + 209907.

It is an arithmetic number, because the mean of its divisors is an integer number (1157965200).

Almost surely, 2^21412343412 is an apocalyptic number.

It is an amenable number.

21412343412 is an abundant number, since it is smaller than the sum of its proper divisors (34169986188).

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

21412343412 is a wasteful number, since it uses less digits than its factorization.

21412343412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245893 (or 245885 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 21412343412 its reverse (21434321412), we get a palindrome (42846664824).

The spelling of 21412343412 in words is "twenty-one billion, four hundred twelve million, three hundred forty-three thousand, four hundred twelve".