1210221210211 has 8 divisors (see below), whose sum is σ = 1371910683920. Its totient is φ = 1058331098592.

The previous prime is 1210221210139. The next prime is 1210221210217. The reversal of 1210221210211 is 1120121220121.

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

It is not a de Polignac number, because 1210221210211 - 2¹⁷ = 1210221079139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210221210217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2449840260 + ... + 2449840753.

It is an arithmetic number, because the mean of its divisors is an integer number (171488835490).

Almost surely, 2^{1210221210211} is an apocalyptic number.

1210221210211 is a deficient number, since it is larger than the sum of its proper divisors (161689473709).

1210221210211 is a wasteful number, since it uses less digits than its factorization.

1210221210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4899681045.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1210221210211 its reverse (1120121220121), we get a palindrome (2330342430332).

The spelling of 1210221210211 in words is "one trillion, two hundred ten billion, two hundred twenty-one million, two hundred ten thousand, two hundred eleven".