222021212122 has 24 divisors (see below), whose sum is σ = 344969787708. Its totient is φ = 107130366720.

The previous prime is 222021212089. The next prime is 222021212173. The reversal of 222021212122 is 221212120222.

It can be written as a sum of positive squares in 6 ways, for example, as 20985561 + 222000226561 = 4581^2 + 471169^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 222021212122.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112978 + ... + 675874.

Almost surely, 2^222021212122 is an apocalyptic number.

222021212122 is a deficient number, since it is larger than the sum of its proper divisors (122948575586).

222021212122 is an equidigital number, since it uses as much as digits as its factorization.

222021212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563074 (or 563013 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222021212122 its reverse (221212120222), we get a palindrome (443233332344).

The spelling of 222021212122 in words is "two hundred twenty-two billion, twenty-one million, two hundred twelve thousand, one hundred twenty-two".