21323203012212 has 48 divisors (see below), whose sum is σ = 52507413940800. Its totient is φ = 6716332892160.

The previous prime is 21323203012183. The next prime is 21323203012213. The reversal of 21323203012212 is 21221030232312.

It is a super-2 number, since 2×21323203012212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323203012213) 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, 120120589 + ... + 120297972.

It is an arithmetic number, because the mean of its divisors is an integer number (1093904457100).

Almost surely, 2^{21323203012212} is an apocalyptic number.

It is an amenable number.

21323203012212 is an abundant number, since it is smaller than the sum of its proper divisors (31184210928588).

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

21323203012212 is a wasteful number, since it uses less digits than its factorization.

21323203012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240418976 (or 240418974 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21323203012212 its reverse (21221030232312), we get a palindrome (42544233244524).

The spelling of 21323203012212 in words is "twenty-one trillion, three hundred twenty-three billion, two hundred three million, twelve thousand, two hundred twelve".