2111200111218 has 16 divisors (see below), whose sum is σ = 4606254788256. Its totient is φ = 639757609440.

The previous prime is 2111200111211. The next prime is 2111200111243. The reversal of 2111200111218 is 8121110021112.

It is a junction number, because it is equal to n+sod(n) for n = 2111200111194 and 2111200111203.

It is not an unprimeable number, because it can be changed into a prime (2111200111211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15993940171 + ... + 15993940302.

It is an arithmetic number, because the mean of its divisors is an integer number (287890924266).

Almost surely, 2^{2111200111218} is an apocalyptic number.

2111200111218 is an abundant number, since it is smaller than the sum of its proper divisors (2495054677038).

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

2111200111218 is a wasteful number, since it uses less digits than its factorization.

2111200111218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31987880489.

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

The spelling of 2111200111218 in words is "two trillion, one hundred eleven billion, two hundred million, one hundred eleven thousand, two hundred eighteen".