21323312213302 has 32 divisors (see below), whose sum is σ = 35903036152224. Its totient is φ = 9415384992000.

The previous prime is 21323312213237. The next prime is 21323312213309. The reversal of 21323312213302 is 20331221332312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323312213309) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 90414783 + ... + 90650314.

It is an arithmetic number, because the mean of its divisors is an integer number (1121969879757).

Almost surely, 2^{21323312213302} is an apocalyptic number.

21323312213302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21323312213302 is a deficient number, since it is larger than the sum of its proper divisors (14579723938922).

21323312213302 is a wasteful number, since it uses less digits than its factorization.

21323312213302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181065264.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 21323312213302 its reverse (20331221332312), we get a palindrome (41654533545614).

It can be divided in two parts, 21 and 323312213302, that added together give a palindrome (323312213323).

The spelling of 21323312213302 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred twelve million, two hundred thirteen thousand, three hundred two".