11220111222001 has 16 divisors (see below), whose sum is σ = 13095556920000. Its totient is φ = 9504839678400.

The previous prime is 11220111221989. The next prime is 11220111222121. The reversal of 11220111222001 is 10022211102211.

11220111222001 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 11220111222001 - 2³³ = 11211521287409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220111222601) 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, 440026126 + ... + 440051623.

It is an arithmetic number, because the mean of its divisors is an integer number (818472307500).

Almost surely, 2^{11220111222001} is an apocalyptic number.

11220111222001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11220111222001 is a deficient number, since it is larger than the sum of its proper divisors (1875445697999).

11220111222001 is a wasteful number, since it uses less digits than its factorization.

11220111222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880077840.

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

Adding to 11220111222001 its reverse (10022211102211), we get a palindrome (21242322324212).

The spelling of 11220111222001 in words is "eleven trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-two thousand, one".