11221210220202 has 64 divisors (see below), whose sum is σ = 25539195749760. Its totient is φ = 3650086081152.

The previous prime is 11221210220173. The next prime is 11221210220219. The reversal of 11221210220202 is 20202201212211.

It is a happy number.

11221210220202 is a `hidden beast` number, since 1 + 1 + 221 + 21 + 0 + 220 + 202 = 666.

11221210220202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344608 + ... + 4749860.

It is an arithmetic number, because the mean of its divisors is an integer number (399049933590).

Almost surely, 2^{11221210220202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11221210220202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12769597874880).

11221210220202 is an abundant number, since it is smaller than the sum of its proper divisors (14317985529558).

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

11221210220202 is a wasteful number, since it uses less digits than its factorization.

11221210220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4406404 (or 4406398 counting only the distinct ones).

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

Adding to 11221210220202 its reverse (20202201212211), we get a palindrome (31423411432413).

The spelling of 11221210220202 in words is "eleven trillion, two hundred twenty-one billion, two hundred ten million, two hundred twenty thousand, two hundred two".