12201121121222 has 64 divisors (see below), whose sum is σ = 21131664134400. Its totient is φ = 5225298624000.

The previous prime is 12201121121213. The next prime is 12201121121237. The reversal of 12201121121222 is 22212112110221.

It is a super-2 number, since 2×12201121121222² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12201121121194 and 12201121121203.

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 31 ways as a sum of consecutive naturals, for example, 61095929 + ... + 61295307.

It is an arithmetic number, because the mean of its divisors is an integer number (330182252100).

Almost surely, 2^{12201121121222} is an apocalyptic number.

12201121121222 is a deficient number, since it is larger than the sum of its proper divisors (8930543013178).

12201121121222 is a wasteful number, since it uses less digits than its factorization.

12201121121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200213.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12201121121222 its reverse (22212112110221), we get a palindrome (34413233231443).

The spelling of 12201121121222 in words is "twelve trillion, two hundred one billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-two".