2121203231222 has 16 divisors (see below), whose sum is σ = 3191403741552. Its totient is φ = 1057402295040.

The previous prime is 2121203231207. The next prime is 2121203231233. The reversal of 2121203231222 is 2221323021212.

It is a happy number.

It is a super-2 number, since 2×2121203231222² (a number of 25 digits) contains 22 as substring.

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, 16105697 + ... + 16236867.

It is an arithmetic number, because the mean of its divisors is an integer number (199462733847).

Almost surely, 2^{2121203231222} is an apocalyptic number.

2121203231222 is a deficient number, since it is larger than the sum of its proper divisors (1070200510330).

2121203231222 is a wasteful number, since it uses less digits than its factorization.

2121203231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155503.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2121203231222 its reverse (2221323021212), we get a palindrome (4342526252434).

The spelling of 2121203231222 in words is "two trillion, one hundred twenty-one billion, two hundred three million, two hundred thirty-one thousand, two hundred twenty-two".