213121332210 has 64 divisors (see below), whose sum is σ = 522466205184. Its totient is φ = 55613337600.

The previous prime is 213121332181. The next prime is 213121332211. The reversal of 213121332210 is 12233121312.

It is not an unprimeable number, because it can be changed into a prime (213121332211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11497750 + ... + 11516270.

It is an arithmetic number, because the mean of its divisors is an integer number (8163534456).

Almost surely, 2^213121332210 is an apocalyptic number.

213121332210 is an abundant number, since it is smaller than the sum of its proper divisors (309344872974).

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

213121332210 is a wasteful number, since it uses less digits than its factorization.

213121332210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26739.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213121332210 its reverse (12233121312), we get a palindrome (225354453522).

The spelling of 213121332210 in words is "two hundred thirteen billion, one hundred twenty-one million, three hundred thirty-two thousand, two hundred ten".