2112220221222 has 32 divisors (see below), whose sum is σ = 4355111261952. Its totient is φ = 682439645664.

The previous prime is 2112220221191. The next prime is 2112220221317. The reversal of 2112220221222 is 2221220222112.

It is a super-2 number, since 2×2112220221222² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18030028 + ... + 18146799.

It is an arithmetic number, because the mean of its divisors is an integer number (136097226936).

Almost surely, 2^{2112220221222} is an apocalyptic number.

2112220221222 is an abundant number, since it is smaller than the sum of its proper divisors (2242891040730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2112220221222 is a wasteful number, since it uses less digits than its factorization.

2112220221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36177132.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2112220221222 its reverse (2221220222112), we get a palindrome (4333440443334).

The spelling of 2112220221222 in words is "two trillion, one hundred twelve billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twenty-two".