222120222122121 has 16 divisors (see below), whose sum is σ = 299102800741248. Its totient is φ = 146608996032000.

The previous prime is 222120222122111. The next prime is 222120222122209. The reversal of 222120222122121 is 121221222021222.

It is a happy number.

It is not a de Polignac number, because 222120222122121 - 2²³ = 222120213733513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222120222122091 and 222120222122100.

It is not an unprimeable number, because it can be changed into a prime (222120222122101) 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, 3641320 + ... + 21389241.

It is an arithmetic number, because the mean of its divisors is an integer number (18693925046328).

Almost surely, 2^{222120222122121} is an apocalyptic number.

It is an amenable number.

222120222122121 is a deficient number, since it is larger than the sum of its proper divisors (76982578619127).

222120222122121 is a wasteful number, since it uses less digits than its factorization.

222120222122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25059952.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 222120222122121 its reverse (121221222021222), we get a palindrome (343341444143343).

The spelling of 222120222122121 in words is "two hundred twenty-two trillion, one hundred twenty billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".