21341340121112 has 64 divisors (see below), whose sum is σ = 44307325071360. Its totient is φ = 9556132262400.

The previous prime is 21341340121111. The next prime is 21341340121147. The reversal of 21341340121112 is 21112104314312.

It is a happy number.

It is a super-3 number, since 3×21341340121112³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21341340121111) 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, 4432433 + ... + 7894880.

It is an arithmetic number, because the mean of its divisors is an integer number (692301954240).

Almost surely, 2^{21341340121112} is an apocalyptic number.

21341340121112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21341340121112 is an abundant number, since it is smaller than the sum of its proper divisors (22965984950248).

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

21341340121112 is a wasteful number, since it uses less digits than its factorization.

21341340121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12327624 (or 12327620 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 21341340121112 its reverse (21112104314312), we get a palindrome (42453444435424).

The spelling of 21341340121112 in words is "twenty-one trillion, three hundred forty-one billion, three hundred forty million, one hundred twenty-one thousand, one hundred twelve".