11222002120 has 64 divisors (see below), whose sum is σ = 28964044800. Its totient is φ = 3833214720.

The previous prime is 11222002087. The next prime is 11222002133. The reversal of 11222002120 is 2120022211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11222002120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 825 + ... + 149815.

It is an arithmetic number, because the mean of its divisors is an integer number (452563200).

Almost surely, 2^11222002120 is an apocalyptic number.

11222002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11222002120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14482022400).

11222002120 is an abundant number, since it is smaller than the sum of its proper divisors (17742042680).

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

11222002120 is a wasteful number, since it uses less digits than its factorization.

11222002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149278 (or 149274 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 11222002120 its reverse (2120022211), we get a palindrome (13342024331).

The spelling of 11222002120 in words is "eleven billion, two hundred twenty-two million, two thousand, one hundred twenty".