1210221120211 has 4 divisors (see below), whose sum is σ = 1211639903152. Its totient is φ = 1208802337272.

The previous prime is 1210221120107. The next prime is 1210221120223. The reversal of 1210221120211 is 1120211220121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1210221120211 - 2⁷ = 1210221120083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210221130211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 709390191 + ... + 709391896.

It is an arithmetic number, because the mean of its divisors is an integer number (302909975788).

Almost surely, 2^{1210221120211} is an apocalyptic number.

1210221120211 is a deficient number, since it is larger than the sum of its proper divisors (1418782941).

1210221120211 is an equidigital number, since it uses as much as digits as its factorization.

1210221120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418782940.

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

Adding to 1210221120211 its reverse (1120211220121), we get a palindrome (2330432340332).

The spelling of 1210221120211 in words is "one trillion, two hundred ten billion, two hundred twenty-one million, one hundred twenty thousand, two hundred eleven".