1020220211 has 4 divisors (see below), whose sum is σ = 1041927072.
Its totient is φ = 998513352.
The previous prime is 1020220207. The next prime is 1020220241. The reversal of 1020220211 is 1120220201.
It is a happy number.
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 1020220211 - 22 = 1020220207 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 1020220192 and 1020220201.
It is not an unprimeable number, because it can be changed into a prime (1020220241) 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, 10853360 + ... + 10853453.
It is an arithmetic number, because the mean of its divisors is an integer number (260481768).
Almost surely, 21020220211 is an apocalyptic number.
1020220211 is a deficient number, since it is larger than the sum of its proper divisors (21706861).
1020220211 is an equidigital number, since it uses as much as digits as its factorization.
1020220211 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21706860.
The product of its (nonzero) digits is 16, while the sum is 11.
The square root of 1020220211 is about 31940.8861962219.
The cubic root of 1020220211 is about 1006.6951453258.
Adding to 1020220211 its reverse (1120220201), we get a palindrome (2140440412).
The spelling of 1020220211 in words is "one billion, twenty million, two hundred twenty thousand, two hundred eleven".