21136355363112 has 128 divisors (see below), whose sum is σ = 57802340413440. Its totient is φ = 6387448078080.

The previous prime is 21136355363111. The next prime is 21136355363143.

21136355363112 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (21136355363111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191125338 + ... + 191235894.

It is an arithmetic number, because the mean of its divisors is an integer number (451580784480).

Almost surely, 2^{21136355363112} is an apocalyptic number.

21136355363112 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 21136355363112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28901170206720).

21136355363112 is an abundant number, since it is smaller than the sum of its proper divisors (36665985050328).

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

21136355363112 is a wasteful number, since it uses less digits than its factorization.

21136355363112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112551 (or 112547 counting only the distinct ones).

The product of its digits is 291600, while the sum is 42.

It can be divided in two parts, 2113635 and 5363112, that added together give a palindrome (7476747).

The spelling of 21136355363112 in words is "twenty-one trillion, one hundred thirty-six billion, three hundred fifty-five million, three hundred sixty-three thousand, one hundred twelve".