2220120111111 has 16 divisors (see below), whose sum is σ = 3383064136704. Its totient is φ = 1268631075744.

The previous prime is 2220120111107. The next prime is 2220120111151. The reversal of 2220120111111 is 1111110210222.

It is a happy number.

It is not a de Polignac number, because 2220120111111 - 2² = 2220120111107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220120111151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3682281 + ... + 4242573.

It is an arithmetic number, because the mean of its divisors is an integer number (211441508544).

Almost surely, 2^{2220120111111} is an apocalyptic number.

2220120111111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2220120111111 is a deficient number, since it is larger than the sum of its proper divisors (1162944025593).

2220120111111 is a wasteful number, since it uses less digits than its factorization.

2220120111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748990.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2220120111111 its reverse (1111110210222), we get a palindrome (3331230321333).

The spelling of 2220120111111 in words is "two trillion, two hundred twenty billion, one hundred twenty million, one hundred eleven thousand, one hundred eleven".