222022122121221 has 8 divisors (see below), whose sum is σ = 296033685521184. Its totient is φ = 148012653401040.

The previous prime is 222022122121199. The next prime is 222022122121279. The reversal of 222022122121221 is 122121221220222.

It is a happy number.

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

It is not a de Polignac number, because 222022122121221 - 2⁴⁵ = 186837750032389 is a prime.

It is a super-2 number, since 2×222022122121221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222022122121191 and 222022122121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222022122121021) by changing a digit.

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, 523422610 + ... + 523846611.

It is an arithmetic number, because the mean of its divisors is an integer number (37004210690148).

Almost surely, 2^{222022122121221} is an apocalyptic number.

It is an amenable number.

222022122121221 is a deficient number, since it is larger than the sum of its proper divisors (74011563399963).

222022122121221 is a wasteful number, since it uses less digits than its factorization.

222022122121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047339891.

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

Adding to 222022122121221 its reverse (122121221220222), we get a palindrome (344143343341443).

Subtracting from 222022122121221 its reverse (122121221220222), we obtain a palindrome (99900900900999).

The spelling of 222022122121221 in words is "two hundred twenty-two trillion, twenty-two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".