2101221112 has 8 divisors (see below), whose sum is σ = 3939789600. Its totient is φ = 1050610552.

The previous prime is 2101221107. The next prime is 2101221127. The reversal of 2101221112 is 2111221012.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2101221092 and 2101221101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131326312 + ... + 131326327.

It is an arithmetic number, because the mean of its divisors is an integer number (492473700).

Almost surely, 2^2101221112 is an apocalyptic number.

It is an amenable number.

2101221112 is a deficient number, since it is larger than the sum of its proper divisors (1838568488).

2101221112 is a wasteful number, since it uses less digits than its factorization.

2101221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262652645 (or 262652641 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2101221112 is about 45839.0784375079. The cubic root of 2101221112 is about 1280.8273280969.

Adding to 2101221112 its reverse (2111221012), we get a palindrome (4212442124).

It can be divided in two parts, 21012 and 21112, that added together give a palindrome (42124).

The spelling of 2101221112 in words is "two billion, one hundred one million, two hundred twenty-one thousand, one hundred twelve".