11010100221 has 24 divisors (see below), whose sum is σ = 16851407040. Its totient is φ = 6907680000.

The previous prime is 11010100187. The next prime is 11010100229. The reversal of 11010100221 is 12200101011.

It is a happy number.

It is not a de Polignac number, because 11010100221 - 2¹⁹ = 11009575933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010100229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187380 + ... + 239021.

It is an arithmetic number, because the mean of its divisors is an integer number (702141960).

Almost surely, 2^11010100221 is an apocalyptic number.

It is an amenable number.

11010100221 is a deficient number, since it is larger than the sum of its proper divisors (5841306819).

11010100221 is a wasteful number, since it uses less digits than its factorization.

11010100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426577 (or 426574 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11010100221 its reverse (12200101011), we get a palindrome (23210201232).

The spelling of 11010100221 in words is "eleven billion, ten million, one hundred thousand, two hundred twenty-one".