222111012120012 has 72 divisors (see below), whose sum is σ = 574515225844560. Its totient is φ = 72313824643200.

The previous prime is 222111012119963. The next prime is 222111012120029. The reversal of 222111012120012 is 210021210111222.

222111012120012 is a `hidden beast` number, since 2 + 221 + 110 + 121 + 200 + 12 = 666.

It is a super-3 number, since 3×222111012120012³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80849314 + ... + 83551382.

It is an arithmetic number, because the mean of its divisors is an integer number (7979378136730).

Almost surely, 2^{222111012120012} is an apocalyptic number.

It is an amenable number.

222111012120012 is an abundant number, since it is smaller than the sum of its proper divisors (352404213724548).

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

222111012120012 is a wasteful number, since it uses less digits than its factorization.

222111012120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755223 (or 2755218 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 222111012120012 its reverse (210021210111222), we get a palindrome (432132222231234).

The spelling of 222111012120012 in words is "two hundred twenty-two trillion, one hundred eleven billion, twelve million, one hundred twenty thousand, twelve".