11111020002120 has 64 divisors (see below), whose sum is σ = 33676699835520. Its totient is φ = 2932392904704.

The previous prime is 11111020002097. The next prime is 11111020002143. The reversal of 11111020002120 is 2120002011111.

It is an interprime number because it is at equal distance from previous prime (11111020002097) and next prime (11111020002143).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11111020002096 and 11111020002105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477265852 + ... + 477289131.

It is an arithmetic number, because the mean of its divisors is an integer number (526198434930).

Almost surely, 2^{11111020002120} is an apocalyptic number.

11111020002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111020002120 is an abundant number, since it is smaller than the sum of its proper divisors (22565679833400).

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

11111020002120 is a wasteful number, since it uses less digits than its factorization.

11111020002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954555094 (or 954555090 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11111020002120 its reverse (2120002011111), we get a palindrome (13231022013231).

The spelling of 11111020002120 in words is "eleven trillion, one hundred eleven billion, twenty million, two thousand, one hundred twenty".