213220221101 has 4 divisors (see below), whose sum is σ = 213221271552. Its totient is φ = 213219170652.

The previous prime is 213220221089. The next prime is 213220221163. The reversal of 213220221101 is 101122022312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 213220221101 - 2⁶ = 213220221037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213220221101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213220221901) 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, 112811 + ... + 662696.

It is an arithmetic number, because the mean of its divisors is an integer number (53305317888).

Almost surely, 2^213220221101 is an apocalyptic number.

It is an amenable number.

213220221101 is a deficient number, since it is larger than the sum of its proper divisors (1050451).

213220221101 is an equidigital number, since it uses as much as digits as its factorization.

213220221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050450.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 213220221101 its reverse (101122022312), we get a palindrome (314342243413).

The spelling of 213220221101 in words is "two hundred thirteen billion, two hundred twenty million, two hundred twenty-one thousand, one hundred one".