11011100121222 has 16 divisors (see below), whose sum is σ = 22022313108480. Its totient is φ = 3670347896072.

The previous prime is 11011100121221. The next prime is 11011100121223. The reversal of 11011100121222 is 22212100111011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11011100121221) and next prime (11011100121223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011100121221) 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, 3407022 + ... + 5799137.

It is an arithmetic number, because the mean of its divisors is an integer number (1376394569280).

Almost surely, 2^{11011100121222} is an apocalyptic number.

11011100121222 is an abundant number, since it is smaller than the sum of its proper divisors (11011212987258).

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

11011100121222 is a wasteful number, since it uses less digits than its factorization.

11011100121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9405507.

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

Adding to 11011100121222 its reverse (22212100111011), we get a palindrome (33223200232233).

The spelling of 11011100121222 in words is "eleven trillion, eleven billion, one hundred million, one hundred twenty-one thousand, two hundred twenty-two".