2221111220012 has 24 divisors (see below), whose sum is σ = 4056135379296. Its totient is φ = 1062219996288.

The previous prime is 2221111219993. The next prime is 2221111220017. The reversal of 2221111220012 is 2100221111222.

It is not an unprimeable number, because it can be changed into a prime (2221111220017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1404368 + ... + 2532680.

It is an arithmetic number, because the mean of its divisors is an integer number (169005640804).

Almost surely, 2^{2221111220012} is an apocalyptic number.

It is an amenable number.

2221111220012 is a deficient number, since it is larger than the sum of its proper divisors (1835024159284).

2221111220012 is a wasteful number, since it uses less digits than its factorization.

2221111220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149737 (or 1149735 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2221111220012 its reverse (2100221111222), we get a palindrome (4321332331234).

The spelling of 2221111220012 in words is "two trillion, two hundred twenty-one billion, one hundred eleven million, two hundred twenty thousand, twelve".