21436114112 has 112 divisors (see below), whose sum is σ = 51034736640. Its totient is φ = 8739532800.

The previous prime is 21436114111. The next prime is 21436114123. The reversal of 21436114112 is 21141163412.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (21436114111) 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, 806312 + ... + 832472.

Almost surely, 2^21436114112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21436114112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25517368320).

21436114112 is an abundant number, since it is smaller than the sum of its proper divisors (29598622528).

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

21436114112 is a wasteful number, since it uses less digits than its factorization.

21436114112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26270 (or 26260 counting only the distinct ones).

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

Adding to 21436114112 its reverse (21141163412), we get a palindrome (42577277524).

The spelling of 21436114112 in words is "twenty-one billion, four hundred thirty-six million, one hundred fourteen thousand, one hundred twelve".