222002012112221 has 16 divisors (see below), whose sum is σ = 255007258007040. Its totient is φ = 191140366831920.

The previous prime is 222002012112203. The next prime is 222002012112311. The reversal of 222002012112221 is 122211210200222.

It is not a de Polignac number, because 222002012112221 - 2¹⁸ = 222002011850077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222002012112193 and 222002012112202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222002012612221) 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, 159132545 + ... + 160521558.

It is an arithmetic number, because the mean of its divisors is an integer number (15937953625440).

Almost surely, 2^{222002012112221} is an apocalyptic number.

It is an amenable number.

222002012112221 is a deficient number, since it is larger than the sum of its proper divisors (33005245894819).

222002012112221 is a wasteful number, since it uses less digits than its factorization.

222002012112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319657456.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222002012112221 its reverse (122211210200222), we get a palindrome (344213222312443).

The spelling of 222002012112221 in words is "two hundred twenty-two trillion, two billion, twelve million, one hundred twelve thousand, two hundred twenty-one".