2012100221222 has 32 divisors (see below), whose sum is σ = 3876152942592. Its totient is φ = 761387181984.

The previous prime is 2012100221189. The next prime is 2012100221227. The reversal of 2012100221222 is 2221220012102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2012100221222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012100221227) 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, 240332678 + ... + 240341049.

It is an arithmetic number, because the mean of its divisors is an integer number (121129779456).

Almost surely, 2^{2012100221222} is an apocalyptic number.

2012100221222 is a deficient number, since it is larger than the sum of its proper divisors (1864052721370).

2012100221222 is a wasteful number, since it uses less digits than its factorization.

2012100221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480673772.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2012100221222 its reverse (2221220012102), we get a palindrome (4233320233324).

It can be divided in two parts, 2012100 and 221222, that added together give a palindrome (2233322).

The spelling of 2012100221222 in words is "two trillion, twelve billion, one hundred million, two hundred twenty-one thousand, two hundred twenty-two".