10011100221 has 24 divisors (see below), whose sum is σ = 15098616000. Its totient is φ = 6379904256.

The previous prime is 10011100219. The next prime is 10011100223. The reversal of 10011100221 is 12200111001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10011100219) and next prime (10011100223).

It is not a de Polignac number, because 10011100221 - 2¹ = 10011100219 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 (10011100223) 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, 337030 + ... + 365528.

It is an arithmetic number, because the mean of its divisors is an integer number (629109000).

Almost surely, 2^10011100221 is an apocalyptic number.

It is an amenable number.

10011100221 is a deficient number, since it is larger than the sum of its proper divisors (5087515779).

10011100221 is a wasteful number, since it uses less digits than its factorization.

10011100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30225 (or 30222 counting only the distinct ones).

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

Adding to 10011100221 its reverse (12200111001), we get a palindrome (22211211222).

The spelling of 10011100221 in words is "ten billion, eleven million, one hundred thousand, two hundred twenty-one".