11220021101211 has 32 divisors (see below), whose sum is σ = 16379174290752. Its totient is φ = 6789669557760.

The previous prime is 11220021101189. The next prime is 11220021101231. The reversal of 11220021101211 is 11210112002211.

It is a happy number.

It is not a de Polignac number, because 11220021101211 - 2⁹ = 11220021100699 is a prime.

It is a super-2 number, since 2×11220021101211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11220021101231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8554261 + ... + 9778313.

It is an arithmetic number, because the mean of its divisors is an integer number (511849196586).

Almost surely, 2^{11220021101211} is an apocalyptic number.

11220021101211 is a deficient number, since it is larger than the sum of its proper divisors (5159153189541).

11220021101211 is a wasteful number, since it uses less digits than its factorization.

11220021101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227983.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11220021101211 its reverse (11210112002211), we get a palindrome (22430133103422).

The spelling of 11220021101211 in words is "eleven trillion, two hundred twenty billion, twenty-one million, one hundred one thousand, two hundred eleven".