11100220212121 has 16 divisors (see below), whose sum is σ = 11255506891200. Its totient is φ = 10946250602560.

The previous prime is 11100220212101. The next prime is 11100220212161. The reversal of 11100220212121 is 12121202200111.

It is a cyclic number.

It is not a de Polignac number, because 11100220212121 - 2⁹ = 11100220211609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11100220212095 and 11100220212104.

It is not an unprimeable number, because it can be changed into a prime (11100220212101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13302966 + ... + 14112736.

It is an arithmetic number, because the mean of its divisors is an integer number (703469180700).

Almost surely, 2^{11100220212121} is an apocalyptic number.

It is an amenable number.

11100220212121 is a deficient number, since it is larger than the sum of its proper divisors (155286679079).

11100220212121 is a wasteful number, since it uses less digits than its factorization.

11100220212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810584.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11100220212121 its reverse (12121202200111), we get a palindrome (23221422412232).

The spelling of 11100220212121 in words is "eleven trillion, one hundred billion, two hundred twenty million, two hundred twelve thousand, one hundred twenty-one".