2211220011 has 96 divisors (see below), whose sum is σ = 4139589888. Its totient is φ = 1031304960.

The previous prime is 2211220007. The next prime is 2211220031. The reversal of 2211220011 is 1100221122.

It is not a de Polignac number, because 2211220011 - 2² = 2211220007 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2211220001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 776356 + ... + 779198.

It is an arithmetic number, because the mean of its divisors is an integer number (43120728).

Almost surely, 2^2211220011 is an apocalyptic number.

2211220011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2211220011 is a deficient number, since it is larger than the sum of its proper divisors (1928369877).

2211220011 is a wasteful number, since it uses less digits than its factorization.

2211220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921 (or 2914 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2211220011 is about 47023.6112075625. The cubic root of 2211220011 is about 1302.7987063757.

Adding to 2211220011 its reverse (1100221122), we get a palindrome (3311441133).

It can be divided in two parts, 2211 and 220011, that added together give a palindrome (222222).

The spelling of 2211220011 in words is "two billion, two hundred eleven million, two hundred twenty thousand, eleven".