21233213123210 has 64 divisors (see below), whose sum is σ = 44244514344960. Its totient is φ = 7260288002880.

The previous prime is 21233213123197. The next prime is 21233213123263. The reversal of 21233213123210 is 1232131233212.

It is a super-4 number, since 4×21233213123210⁴ (a number of 54 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21233213123210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70974242 + ... + 71272781.

It is an arithmetic number, because the mean of its divisors is an integer number (691320536640).

Almost surely, 2^{21233213123210} is an apocalyptic number.

21233213123210 is an abundant number, since it is smaller than the sum of its proper divisors (23011301221750).

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

21233213123210 is a wasteful number, since it uses less digits than its factorization.

21233213123210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142247123.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21233213123210 its reverse (1232131233212), we get a palindrome (22465344356422).

The spelling of 21233213123210 in words is "twenty-one trillion, two hundred thirty-three billion, two hundred thirteen million, one hundred twenty-three thousand, two hundred ten".