20110221122202 has 48 divisors (see below), whose sum is σ = 45373422686592. Its totient is φ = 6675592034880.

The previous prime is 20110221122197. The next prime is 20110221122209. The reversal of 20110221122202 is 20222112201102.

It is a happy number.

20110221122202 is a `hidden beast` number, since 201 + 10 + 221 + 12 + 220 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (20110221122209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85731538 + ... + 85965789.

It is an arithmetic number, because the mean of its divisors is an integer number (945279639304).

Almost surely, 2^{20110221122202} is an apocalyptic number.

20110221122202 is an abundant number, since it is smaller than the sum of its proper divisors (25263201564390).

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

20110221122202 is a wasteful number, since it uses less digits than its factorization.

20110221122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171697585 (or 171697573 counting only the distinct ones).

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

Adding to 20110221122202 its reverse (20222112201102), we get a palindrome (40332333323304).

The spelling of 20110221122202 in words is "twenty trillion, one hundred ten billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred two".