122222022121221 has 16 divisors (see below), whose sum is σ = 188234985941568. Its totient is φ = 69716661459200.

The previous prime is 122222022121189. The next prime is 122222022121223. The reversal of 122222022121221 is 122121220222221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122222022121221 - 2⁵ = 122222022121189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122222022121191 and 122222022121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122222022121223) 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, 108932282970 + ... + 108932284091.

It is an arithmetic number, because the mean of its divisors is an integer number (11764686621348).

Almost surely, 2^{122222022121221} is an apocalyptic number.

122222022121221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122222022121221 is a deficient number, since it is larger than the sum of its proper divisors (66012963820347).

122222022121221 is a wasteful number, since it uses less digits than its factorization.

122222022121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217864567092.

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

Adding to 122222022121221 its reverse (122121220222221), we get a palindrome (244343242343442).

The spelling of 122222022121221 in words is "one hundred twenty-two trillion, two hundred twenty-two billion, twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".