11012100120221 has 4 divisors (see below), whose sum is σ = 11012108012832. Its totient is φ = 11012092227612.

The previous prime is 11012100120199. The next prime is 11012100120289. The reversal of 11012100120221 is 12202100121011.

11012100120221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11012100120221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012100120196 and 11012100120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012100120521) 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, 1230401 + ... + 4851606.

It is an arithmetic number, because the mean of its divisors is an integer number (2753027003208).

Almost surely, 2^{11012100120221} is an apocalyptic number.

It is an amenable number.

11012100120221 is a deficient number, since it is larger than the sum of its proper divisors (7892611).

11012100120221 is an equidigital number, since it uses as much as digits as its factorization.

11012100120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7892610.

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

Adding to 11012100120221 its reverse (12202100121011), we get a palindrome (23214200241232).

The spelling of 11012100120221 in words is "eleven trillion, twelve billion, one hundred million, one hundred twenty thousand, two hundred twenty-one".