222111020212 has 24 divisors (see below), whose sum is σ = 395177365800. Its totient is φ = 109217961600.

The previous prime is 222111020207. The next prime is 222111020233. The reversal of 222111020212 is 212020111222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54342136996 + 167768883216 = 233114^2 + 409596^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1784703 + ... + 1905094.

It is an arithmetic number, because the mean of its divisors is an integer number (16465723575).

Almost surely, 2^222111020212 is an apocalyptic number.

It is an amenable number.

222111020212 is a deficient number, since it is larger than the sum of its proper divisors (173066345588).

222111020212 is a wasteful number, since it uses less digits than its factorization.

222111020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690051 (or 3690049 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222111020212 its reverse (212020111222), we get a palindrome (434131131434).

The spelling of 222111020212 in words is "two hundred twenty-two billion, one hundred eleven million, twenty thousand, two hundred twelve".