2111200000011 has 20 divisors (see below), whose sum is σ = 3154171065144. Its totient is φ = 1407286742400.

The previous prime is 2111199999991. The next prime is 2111200000031. The reversal of 2111200000011 is 1100000021112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2111199999991) and next prime (2111200000031).

It is not a de Polignac number, because 2111200000011 - 2²⁷ = 2111065782283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2111199999939 and 2111200000002.

It is not an unprimeable number, because it can be changed into a prime (2111200000031) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1026925 + ... + 2297166.

Almost surely, 2^{2111200000011} is an apocalyptic number.

2111200000011 is a deficient number, since it is larger than the sum of its proper divisors (1042971065133).

2111200000011 is an equidigital number, since it uses as much as digits as its factorization.

2111200000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331944 (or 3331935 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 2111200000011 its reverse (1100000021112), we get a palindrome (3211200021123).

The spelling of 2111200000011 in words is "two trillion, one hundred eleven billion, two hundred million, eleven", and thus it is an aban number.