221022222122 has 32 divisors (see below), whose sum is σ = 364534551360. Its totient is φ = 99881568000.

The previous prime is 221022222121. The next prime is 221022222149. The reversal of 221022222122 is 221222220122.

It is a junction number, because it is equal to n+sod(n) for n = 221022222094 and 221022222103.

It is not an unprimeable number, because it can be changed into a prime (221022222121) 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, 98018 + ... + 672050.

It is an arithmetic number, because the mean of its divisors is an integer number (11391704730).

Almost surely, 2^221022222122 is an apocalyptic number.

221022222122 is a deficient number, since it is larger than the sum of its proper divisors (143512329238).

221022222122 is a wasteful number, since it uses less digits than its factorization.

221022222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574358.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 221022222122 its reverse (221222220122), we get a palindrome (442244442244).

The spelling of 221022222122 in words is "two hundred twenty-one billion, twenty-two million, two hundred twenty-two thousand, one hundred twenty-two".