21131001130112 has 32 divisors (see below), whose sum is σ = 42787029711900. Its totient is φ = 10392295633920.

The previous prime is 21131001130111. The next prime is 21131001130159. The reversal of 21131001130112 is 21103110013112.

It can be written as a sum of positive squares in 2 ways, for example, as 21071258038336 + 59743091776 = 4590344^2 + 244424^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (21131001130111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353155687 + ... + 1353171302.

Almost surely, 2^{21131001130112} is an apocalyptic number.

It is an amenable number.

21131001130112 is an abundant number, since it is smaller than the sum of its proper divisors (21656028581788).

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

21131001130112 is an equidigital number, since it uses as much as digits as its factorization.

21131001130112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706327064 (or 2706327052 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 21131001130112 its reverse (21103110013112), we get a palindrome (42234111143224).

The spelling of 21131001130112 in words is "twenty-one trillion, one hundred thirty-one billion, one million, one hundred thirty thousand, one hundred twelve".