11221221202011 has 48 divisors (see below), whose sum is σ = 16866736373760. Its totient is φ = 7182434825280.

The previous prime is 11221221202003. The next prime is 11221221202033. The reversal of 11221221202011 is 11020212212211.

11221221202011 is a `hidden beast` number, since 1 + 1 + 221 + 221 + 20 + 201 + 1 = 666.

11221221202011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11221221202011 - 2³ = 11221221202003 is a prime.

It is a super-2 number, since 2×11221221202011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11221221202511) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46785766 + ... + 47024996.

It is an arithmetic number, because the mean of its divisors is an integer number (351390341120).

Almost surely, 2^{11221221202011} is an apocalyptic number.

11221221202011 is a deficient number, since it is larger than the sum of its proper divisors (5645515171749).

11221221202011 is a wasteful number, since it uses less digits than its factorization.

11221221202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241136 (or 241133 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11221221202011 its reverse (11020212212211), we get a palindrome (22241433414222).

The spelling of 11221221202011 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred two thousand, eleven".