11111223211002 has 24 divisors (see below), whose sum is σ = 24344814904020. Its totient is φ = 3662126001600.

The previous prime is 11111223210959. The next prime is 11111223211003. The reversal of 11111223211002 is 20011232211111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10803507823161 + 307715387841 = 3286869^2 + 554721^2 .

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 (11111223211003) 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, 3467920749 + ... + 3467923952.

Almost surely, 2^{11111223211002} is an apocalyptic number.

11111223211002 is an abundant number, since it is smaller than the sum of its proper divisors (13233591693018).

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

11111223211002 is a wasteful number, since it uses less digits than its factorization.

11111223211002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6935844798 (or 6935844795 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11111223211002 its reverse (20011232211111), we get a palindrome (31122455422113).

The spelling of 11111223211002 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-three million, two hundred eleven thousand, two".