213121340010 has 48 divisors (see below), whose sum is σ = 555312386304. Its totient is φ = 56709598176.

The previous prime is 213121339993. The next prime is 213121340093. The reversal of 213121340010 is 10043121312.

213121340010 is a `hidden beast` number, since 2 + 1 + 312 + 1 + 340 + 0 + 10 = 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 23 ways as a sum of consecutive naturals, for example, 2515582 + ... + 2598921.

It is an arithmetic number, because the mean of its divisors is an integer number (11569008048).

Almost surely, 2^213121340010 is an apocalyptic number.

213121340010 is an abundant number, since it is smaller than the sum of its proper divisors (342191046294).

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

213121340010 is a wasteful number, since it uses less digits than its factorization.

213121340010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5114979 (or 5114976 counting only the distinct ones).

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

Adding to 213121340010 its reverse (10043121312), we get a palindrome (223164461322).

The spelling of 213121340010 in words is "two hundred thirteen billion, one hundred twenty-one million, three hundred forty thousand, ten".