2221111111000 has 64 divisors (see below), whose sum is σ = 5197675392000. Its totient is φ = 888397369600.

The previous prime is 2221111110997. The next prime is 2221111111007. The reversal of 2221111111000 is 1111111222.

It is a happy number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221111111007) 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 15 ways as a sum of consecutive naturals, for example, 23561961 + ... + 23656039.

It is an arithmetic number, because the mean of its divisors is an integer number (81213678000).

Almost surely, 2^{2221111111000} is an apocalyptic number.

2221111111000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221111111000 is an abundant number, since it is smaller than the sum of its proper divisors (2976564281000).

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

2221111111000 is a wasteful number, since it uses less digits than its factorization.

2221111111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117709 (or 117695 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2221111111000 its reverse (1111111222), we get a palindrome (2222222222222).

The spelling of 2221111111000 in words is "two trillion, two hundred twenty-one billion, one hundred eleven million, one hundred eleven thousand".