2121202012222 has 16 divisors (see below), whose sum is σ = 3360824197632. Its totient is φ = 1002518579160.

The previous prime is 2121202012187. The next prime is 2121202012243. The reversal of 2121202012222 is 2222102021212.

It is a self number, because there is not a number n which added to its sum of digits gives 2121202012222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397822168 + ... + 397827499.

It is an arithmetic number, because the mean of its divisors is an integer number (210051512352).

Almost surely, 2^{2121202012222} is an apocalyptic number.

2121202012222 is a deficient number, since it is larger than the sum of its proper divisors (1239622185410).

2121202012222 is a wasteful number, since it uses less digits than its factorization.

2121202012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795649743.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2121202012222 its reverse (2222102021212), we get a palindrome (4343304033434).

The spelling of 2121202012222 in words is "two trillion, one hundred twenty-one billion, two hundred two million, twelve thousand, two hundred twenty-two".