21134243112 has 32 divisors (see below), whose sum is σ = 53832509280. Its totient is φ = 6911827520.

The previous prime is 21134243111. The next prime is 21134243129.

21134243112 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is not an unprimeable number, because it can be changed into a prime (21134243111) 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 7 ways as a sum of consecutive naturals, for example, 8306214 + ... + 8308757.

It is an arithmetic number, because the mean of its divisors is an integer number (1682265915).

Almost surely, 2^21134243112 is an apocalyptic number.

It is an amenable number.

21134243112 is an abundant number, since it is smaller than the sum of its proper divisors (32698266168).

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

21134243112 is a wasteful number, since it uses less digits than its factorization.

21134243112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16615033 (or 16615029 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The spelling of 21134243112 in words is "twenty-one billion, one hundred thirty-four million, two hundred forty-three thousand, one hundred twelve".