2011111021218 has 16 divisors (see below), whose sum is σ = 4331623738176. Its totient is φ = 618803391120.

The previous prime is 2011111021193. The next prime is 2011111021289. The reversal of 2011111021218 is 8121201111102.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2011111021194 and 2011111021203.

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 7 ways as a sum of consecutive naturals, for example, 12891737238 + ... + 12891737393.

It is an arithmetic number, because the mean of its divisors is an integer number (270726483636).

Almost surely, 2^{2011111021218} is an apocalyptic number.

2011111021218 is an abundant number, since it is smaller than the sum of its proper divisors (2320512716958).

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

2011111021218 is a wasteful number, since it uses less digits than its factorization.

2011111021218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25783474649.

The product of its (nonzero) digits is 64, while the sum is 21.

The spelling of 2011111021218 in words is "two trillion, eleven billion, one hundred eleven million, twenty-one thousand, two hundred eighteen".