21312300231002 has 96 divisors (see below), whose sum is σ = 38383807331520. Its totient is φ = 8776661160960.

The previous prime is 21312300230929. The next prime is 21312300231011. The reversal of 21312300231002 is 20013200321312.

It is a super-2 number, since 2×21312300231002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1634748428 + ... + 1634761464.

It is an arithmetic number, because the mean of its divisors is an integer number (399831326370).

Almost surely, 2^{21312300231002} is an apocalyptic number.

21312300231002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21312300231002 is a deficient number, since it is larger than the sum of its proper divisors (17071507100518).

21312300231002 is a wasteful number, since it uses less digits than its factorization.

21312300231002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20508 (or 20485 counting only the distinct ones).

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

Adding to 21312300231002 its reverse (20013200321312), we get a palindrome (41325500552314).

The spelling of 21312300231002 in words is "twenty-one trillion, three hundred twelve billion, three hundred million, two hundred thirty-one thousand, two".