221142311210 has 8 divisors (see below), whose sum is σ = 398056160196. Its totient is φ = 88456924480.

The previous prime is 221142311153. The next prime is 221142311239. The reversal of 221142311210 is 12113241122.

It can be written as a sum of positive squares in 2 ways, for example, as 187942191529 + 33200119681 = 433523^2 + 182209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11057115551 + ... + 11057115570.

Almost surely, 2^221142311210 is an apocalyptic number.

221142311210 is a deficient number, since it is larger than the sum of its proper divisors (176913848986).

221142311210 is a wasteful number, since it uses less digits than its factorization.

221142311210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22114231128.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 221142311210 its reverse (12113241122), we get a palindrome (233255552332).

The spelling of 221142311210 in words is "two hundred twenty-one billion, one hundred forty-two million, three hundred eleven thousand, two hundred ten".