2101221222112 has 12 divisors (see below), whose sum is σ = 4136779281096. Its totient is φ = 1050610611040.

The previous prime is 2101221222073. The next prime is 2101221222151. The reversal of 2101221222112 is 2112221221012.

It is an interprime number because it is at equal distance from previous prime (2101221222073) and next prime (2101221222151).

It is a self number, because there is not a number n which added to its sum of digits gives 2101221222112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32831581564 + ... + 32831581627.

It is an arithmetic number, because the mean of its divisors is an integer number (344731606758).

Almost surely, 2^{2101221222112} is an apocalyptic number.

It is an amenable number.

2101221222112 is a deficient number, since it is larger than the sum of its proper divisors (2035558058984).

2101221222112 is an equidigital number, since it uses as much as digits as its factorization.

2101221222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65663163201 (or 65663163193 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2101221222112 its reverse (2112221221012), we get a palindrome (4213442443124).

The spelling of 2101221222112 in words is "two trillion, one hundred one billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred twelve".