1220010211 has 4 divisors (see below), whose sum is σ = 1394297392. Its totient is φ = 1045723032.

The previous prime is 1220010199. The next prime is 1220010217. The reversal of 1220010211 is 1120100221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1120100221 = 1847 ⋅606443.

It is a cyclic number.

It is not a de Polignac number, because 1220010211 - 2¹³ = 1220002019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220010217) 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, 87143580 + ... + 87143593.

It is an arithmetic number, because the mean of its divisors is an integer number (348574348).

Almost surely, 2^1220010211 is an apocalyptic number.

1220010211 is a deficient number, since it is larger than the sum of its proper divisors (174287181).

1220010211 is an equidigital number, since it uses as much as digits as its factorization.

1220010211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174287180.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1220010211 is about 34928.6445628799. The cubic root of 1220010211 is about 1068.5327112217.

Adding to 1220010211 its reverse (1120100221), we get a palindrome (2340110432).

It can be divided in two parts, 1220010 and 211, that added together give a palindrome (1220221).

The spelling of 1220010211 in words is "one billion, two hundred twenty million, ten thousand, two hundred eleven".