10002201228 has 36 divisors (see below), whose sum is σ = 25288380208. Its totient is φ = 3333402720.

The previous prime is 10002201227. The next prime is 10002201241. The reversal of 10002201228 is 82210220001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 10002201228.

It is not an unprimeable number, because it can be changed into a prime (10002201221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176025 + ... + 225807.

Almost surely, 2^10002201228 is an apocalyptic number.

10002201228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

10002201228 is an abundant number, since it is smaller than the sum of its proper divisors (15286178980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10002201228 is a wasteful number, since it uses less digits than its factorization.

10002201228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55374 (or 55369 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10002201228 its reverse (82210220001), we get a palindrome (92212421229).

The spelling of 10002201228 in words is "ten billion, two million, two hundred one thousand, two hundred twenty-eight".