11221221220202 has 12 divisors (see below), whose sum is σ = 19579886006850. Its totient is φ = 4809094808616.

The previous prime is 11221221220103. The next prime is 11221221220259. The reversal of 11221221220202 is 20202212212211.

It can be written as a sum of positive squares in only one way, i.e., 8393008790761 + 2828212429441 = 2897069^2 + 1681729^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57251128577 + ... + 57251128772.

Almost surely, 2^{11221221220202} is an apocalyptic number.

11221221220202 is a deficient number, since it is larger than the sum of its proper divisors (8358664786648).

11221221220202 is a wasteful number, since it uses less digits than its factorization.

11221221220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114502257365 (or 114502257358 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11221221220202 its reverse (20202212212211), we get a palindrome (31423433432413).

The spelling of 11221221220202 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred twenty thousand, two hundred two".