20102201022228 has 96 divisors (see below), whose sum is σ = 51782263276800. Its totient is φ = 6030115752960.

The previous prime is 20102201022227. The next prime is 20102201022257. The reversal of 20102201022228 is 82222010220102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20102201022198 and 20102201022207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102201022227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7824726 + ... + 10071282.

It is an arithmetic number, because the mean of its divisors is an integer number (539398575800).

Almost surely, 2^{20102201022228} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20102201022228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25891131638400).

20102201022228 is an abundant number, since it is smaller than the sum of its proper divisors (31680062254572).

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

20102201022228 is a wasteful number, since it uses less digits than its factorization.

20102201022228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248017 (or 2248015 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The spelling of 20102201022228 in words is "twenty trillion, one hundred two billion, two hundred one million, twenty-two thousand, two hundred twenty-eight".