11220222122 has 12 divisors (see below), whose sum is σ = 17878590150. Its totient is φ = 5280104256.

The previous prime is 11220222103. The next prime is 11220222127. The reversal of 11220222122 is 22122202211.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10098039121 + 1122183001 = 100489^2 + 33499^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 11220222122.

It is not an unprimeable number, because it can be changed into a prime (11220222127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9705497 + ... + 9706652.

Almost surely, 2^11220222122 is an apocalyptic number.

11220222122 is a deficient number, since it is larger than the sum of its proper divisors (6658368028).

11220222122 is a wasteful number, since it uses less digits than its factorization.

11220222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19412185 (or 19412168 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 11220222122 its reverse (22122202211), we get a palindrome (33342424333).

The spelling of 11220222122 in words is "eleven billion, two hundred twenty million, two hundred twenty-two thousand, one hundred twenty-two".