21230101320012 has 72 divisors (see below), whose sum is σ = 58095635270400. Its totient is φ = 6498138113280.

The previous prime is 21230101320011. The next prime is 21230101320023. The reversal of 21230101320012 is 21002310103212.

21230101320012 is a `hidden beast` number, since 2 + 1 + 230 + 101 + 320 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21230101320011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118663137 + ... + 118841912.

It is an arithmetic number, because the mean of its divisors is an integer number (806883823200).

Almost surely, 2^{21230101320012} is an apocalyptic number.

It is an amenable number.

21230101320012 is an abundant number, since it is smaller than the sum of its proper divisors (36865533950388).

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

21230101320012 is a wasteful number, since it uses less digits than its factorization.

21230101320012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237505263 (or 237505258 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21230101320012 its reverse (21002310103212), we get a palindrome (42232411423224).

The spelling of 21230101320012 in words is "twenty-one trillion, two hundred thirty billion, one hundred one million, three hundred twenty thousand, twelve".