220102211 has 4 divisors (see below), whose sum is σ = 251545392. Its totient is φ = 188659032.

The previous prime is 220102189. The next prime is 220102231. The reversal of 220102211 is 112201022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112201022 = 2 ⋅56100511.

It is a cyclic number.

It is not a de Polignac number, because 220102211 - 2¹⁸ = 219840067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220102192 and 220102201.

It is not an unprimeable number, because it can be changed into a prime (220102231) 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, 15721580 + ... + 15721593.

It is an arithmetic number, because the mean of its divisors is an integer number (62886348).

Almost surely, 2^220102211 is an apocalyptic number.

220102211 is a deficient number, since it is larger than the sum of its proper divisors (31443181).

220102211 is an equidigital number, since it uses as much as digits as its factorization.

220102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31443180.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 220102211 is about 14835.8421061967. The cubic root of 220102211 is about 603.7745483662.

Adding to 220102211 its reverse (112201022), we get a palindrome (332303233).

It can be divided in two parts, 2201022 and 11, that multiplied together give a palindrome (24211242).

The spelling of 220102211 in words is "two hundred twenty million, one hundred two thousand, two hundred eleven".