11111222002120 has 64 divisors (see below), whose sum is σ = 26248332139200. Its totient is φ = 4227182319360.

The previous prime is 11111222002099. The next prime is 11111222002141. The reversal of 11111222002120 is 2120022211111.

It is an interprime number because it is at equal distance from previous prime (11111222002099) and next prime (11111222002141).

It is a junction number, because it is equal to n+sod(n) for n = 11111222002094 and 11111222002103.

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, 71404666 + ... + 71560105.

It is an arithmetic number, because the mean of its divisors is an integer number (410130189675).

Almost surely, 2^{11111222002120} is an apocalyptic number.

11111222002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111222002120 is an abundant number, since it is smaller than the sum of its proper divisors (15137110137080).

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

11111222002120 is a wasteful number, since it uses less digits than its factorization.

11111222002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142964878 (or 142964874 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11111222002120 its reverse (2120022211111), we get a palindrome (13231244213231).

The spelling of 11111222002120 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-two million, two thousand, one hundred twenty".