11001021111222 has 16 divisors (see below), whose sum is σ = 22002075076800. Its totient is φ = 3667001561352.

The previous prime is 11001021111203. The next prime is 11001021111229. The reversal of 11001021111222 is 22211112010011.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001021111229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6221529 + ... + 7791627.

It is an arithmetic number, because the mean of its divisors is an integer number (1375129692300).

Almost surely, 2^{11001021111222} is an apocalyptic number.

11001021111222 is an abundant number, since it is smaller than the sum of its proper divisors (11001053965578).

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

11001021111222 is a wasteful number, since it uses less digits than its factorization.

11001021111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737867.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11001021111222 its reverse (22211112010011), we get a palindrome (33212133121233).

The spelling of 11001021111222 in words is "eleven trillion, one billion, twenty-one million, one hundred eleven thousand, two hundred twenty-two".