220101221211 has 4 divisors (see below), whose sum is σ = 293468294952. Its totient is φ = 146734147472.

The previous prime is 220101221191. The next prime is 220101221227. The reversal of 220101221211 is 112122101022.

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 220101221211 - 2⁹ = 220101220699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220101221911) 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, 36683536866 + ... + 36683536871.

It is an arithmetic number, because the mean of its divisors is an integer number (73367073738).

Almost surely, 2^220101221211 is an apocalyptic number.

220101221211 is a deficient number, since it is larger than the sum of its proper divisors (73367073741).

220101221211 is an equidigital number, since it uses as much as digits as its factorization.

220101221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73367073740.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220101221211 its reverse (112122101022), we get a palindrome (332223322233).

The spelling of 220101221211 in words is "two hundred twenty billion, one hundred one million, two hundred twenty-one thousand, two hundred eleven".