11100002220021 has 96 divisors (see below), whose sum is σ = 18412117102080. Its totient is φ = 5880080044800.

The previous prime is 11100002220019. The next prime is 11100002220029. The reversal of 11100002220021 is 12002220000111.

It is not a de Polignac number, because 11100002220021 - 2¹ = 11100002220019 is a prime.

It is a super-2 number, since 2×11100002220021² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11100002219979 and 11100002220006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100002220029) 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, 225782575 + ... + 225831731.

It is an arithmetic number, because the mean of its divisors is an integer number (191792886480).

Almost surely, 2^{11100002220021} is an apocalyptic number.

11100002220021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11100002220021 is a deficient number, since it is larger than the sum of its proper divisors (7312114882059).

11100002220021 is a wasteful number, since it uses less digits than its factorization.

11100002220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51347 (or 51334 counting only the distinct ones).

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

Adding to 11100002220021 its reverse (12002220000111), we get a palindrome (23102222220132).

The spelling of 11100002220021 in words is "eleven trillion, one hundred billion, two million, two hundred twenty thousand, twenty-one".