213232121010 has 96 divisors (see below), whose sum is σ = 562406727168. Its totient is φ = 56041614720.

The previous prime is 213232120973. The next prime is 213232121021. The reversal of 213232121010 is 10121232312.

213232121010 is a `hidden beast` number, since 2 + 132 + 321 + 210 + 1 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36119719 + ... + 36125621.

It is an arithmetic number, because the mean of its divisors is an integer number (5858403408).

Almost surely, 2^213232121010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213232121010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281203363584).

213232121010 is an abundant number, since it is smaller than the sum of its proper divisors (349174606158).

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

213232121010 is a wasteful number, since it uses less digits than its factorization.

213232121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11640 (or 11637 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 213232121010 its reverse (10121232312), we get a palindrome (223353353322).

The spelling of 213232121010 in words is "two hundred thirteen billion, two hundred thirty-two million, one hundred twenty-one thousand, ten".