21363236312 has 48 divisors (see below), whose sum is σ = 44185818600. Its totient is φ = 9675881600.

The previous prime is 21363236311. The next prime is 21363236317.

21363236312 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21363236312² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21363236311) 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 11 ways as a sum of consecutive naturals, for example, 232739 + ... + 311277.

Almost surely, 2^21363236312 is an apocalyptic number.

21363236312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21363236312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22092909300).

21363236312 is an abundant number, since it is smaller than the sum of its proper divisors (22822582288).

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

21363236312 is a wasteful number, since it uses less digits than its factorization.

21363236312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78848 (or 78833 counting only the distinct ones).

The product of its digits is 23328, while the sum is 32.

The spelling of 21363236312 in words is "twenty-one billion, three hundred sixty-three million, two hundred thirty-six thousand, three hundred twelve".