21312230002302 has 64 divisors (see below), whose sum is σ = 44251386566400. Its totient is φ = 6834694890240.

The previous prime is 21312230002279. The next prime is 21312230002339. The reversal of 21312230002302 is 20320003221312.

It is a happy number.

It is a super-2 number, since 2×21312230002302² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89300649 + ... + 89538987.

It is an arithmetic number, because the mean of its divisors is an integer number (691427915100).

Almost surely, 2^{21312230002302} is an apocalyptic number.

21312230002302 is an abundant number, since it is smaller than the sum of its proper divisors (22939156564098).

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

21312230002302 is a wasteful number, since it uses less digits than its factorization.

21312230002302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240201.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21312230002302 its reverse (20320003221312), we get a palindrome (41632233223614).

The spelling of 21312230002302 in words is "twenty-one trillion, three hundred twelve billion, two hundred thirty million, two thousand, three hundred two".