11100221201121 has 32 divisors (see below), whose sum is σ = 15994207004160. Its totient is φ = 6807153579264.

The previous prime is 11100221201107. The next prime is 11100221201123. The reversal of 11100221201121 is 12110212200111.

It is a happy number.

It is not a de Polignac number, because 11100221201121 - 2¹⁵ = 11100221168353 is a prime.

It is a super-2 number, since 2×11100221201121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11100221201121.

It is not an unprimeable number, because it can be changed into a prime (11100221201123) 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, 329983515 + ... + 330017151.

It is an arithmetic number, because the mean of its divisors is an integer number (499818968880).

Almost surely, 2^{11100221201121} is an apocalyptic number.

It is an amenable number.

11100221201121 is a deficient number, since it is larger than the sum of its proper divisors (4893985803039).

11100221201121 is a wasteful number, since it uses less digits than its factorization.

11100221201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62825.

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

Adding to 11100221201121 its reverse (12110212200111), we get a palindrome (23210433401232).

The spelling of 11100221201121 in words is "eleven trillion, one hundred billion, two hundred twenty-one million, two hundred one thousand, one hundred twenty-one".