11010120221 has 4 divisors (see below), whose sum is σ = 11032009632. Its totient is φ = 10988230812.

The previous prime is 11010120203. The next prime is 11010120281. The reversal of 11010120221 is 12202101011.

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 11010120221 - 2⁶ = 11010120157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010120281) 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, 10943951 + ... + 10944956.

It is an arithmetic number, because the mean of its divisors is an integer number (2758002408).

Almost surely, 2^11010120221 is an apocalyptic number.

It is an amenable number.

11010120221 is a deficient number, since it is larger than the sum of its proper divisors (21889411).

11010120221 is an equidigital number, since it uses as much as digits as its factorization.

11010120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21889410.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11010120221 its reverse (12202101011), we get a palindrome (23212221232).

The spelling of 11010120221 in words is "eleven billion, ten million, one hundred twenty thousand, two hundred twenty-one".