22121212200121 has 8 divisors (see below), whose sum is σ = 22168046707200. Its totient is φ = 22074380412480.

The previous prime is 22121212200053. The next prime is 22121212200223. The reversal of 22121212200121 is 12100221212122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22121212200121 - 2⁹ = 22121212199609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121212209121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16041025 + ... + 17365393.

It is an arithmetic number, because the mean of its divisors is an integer number (2771005838400).

Almost surely, 2^{22121212200121} is an apocalyptic number.

It is an amenable number.

22121212200121 is a deficient number, since it is larger than the sum of its proper divisors (46834507079).

22121212200121 is a wasteful number, since it uses less digits than its factorization.

22121212200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359719.

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

Adding to 22121212200121 its reverse (12100221212122), we get a palindrome (34221433412243).

The spelling of 22121212200121 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twelve million, two hundred thousand, one hundred twenty-one".