11001020112221 has 4 divisors (see below), whose sum is σ = 11107826132832. Its totient is φ = 10894214091612.

The previous prime is 11001020112197. The next prime is 11001020112259. The reversal of 11001020112221 is 12221102010011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11001020112221 - 2⁶ = 11001020112157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001020112196 and 11001020112205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001020112421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53403010151 + ... + 53403010356.

It is an arithmetic number, because the mean of its divisors is an integer number (2776956533208).

Almost surely, 2^{11001020112221} is an apocalyptic number.

It is an amenable number.

11001020112221 is a deficient number, since it is larger than the sum of its proper divisors (106806020611).

11001020112221 is a wasteful number, since it uses less digits than its factorization.

11001020112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106806020610.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11001020112221 its reverse (12221102010011), we get a palindrome (23222122122232).

The spelling of 11001020112221 in words is "eleven trillion, one billion, twenty million, one hundred twelve thousand, two hundred twenty-one".