21230001302312 has 16 divisors (see below), whose sum is σ = 43425002664000. Its totient is φ = 9650000591920.

The previous prime is 21230001302311. The next prime is 21230001302327. The reversal of 21230001302312 is 21320310003212.

It is not an unprimeable number, because it can be changed into a prime (21230001302311) 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, 120625007312 + ... + 120625007487.

It is an arithmetic number, because the mean of its divisors is an integer number (2714062666500).

Almost surely, 2^{21230001302312} is an apocalyptic number.

21230001302312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21230001302312 is an abundant number, since it is smaller than the sum of its proper divisors (22195001361688).

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

21230001302312 is a wasteful number, since it uses less digits than its factorization.

21230001302312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241250014816 (or 241250014812 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21230001302312 its reverse (21320310003212), we get a palindrome (42550311305524).

The spelling of 21230001302312 in words is "twenty-one trillion, two hundred thirty billion, one million, three hundred two thousand, three hundred twelve".