11220212011 has 8 divisors (see below), whose sum is σ = 11273312000. Its totient is φ = 11167148160.

The previous prime is 11220211997. The next prime is 11220212023. The reversal of 11220212011 is 11021202211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11220212011 - 2⁵ = 11220211979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220211982 and 11220212000.

It is not an unprimeable number, because it can be changed into a prime (11220212911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769315 + ... + 783763.

It is an arithmetic number, because the mean of its divisors is an integer number (1409164000).

Almost surely, 2^11220212011 is an apocalyptic number.

11220212011 is a deficient number, since it is larger than the sum of its proper divisors (53099989).

11220212011 is a wasteful number, since it uses less digits than its factorization.

11220212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18069.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11220212011 its reverse (11021202211), we get a palindrome (22241414222).

It can be divided in two parts, 11 and 220212011, that added together give a palindrome (220212022).

The spelling of 11220212011 in words is "eleven billion, two hundred twenty million, two hundred twelve thousand, eleven".