4012122222 has 12 divisors (see below), whose sum is σ = 8692931520. Its totient is φ = 1337374068.

The previous prime is 4012122217. The next prime is 4012122223. The reversal of 4012122222 is 2222212104.

4012122222 is a `hidden beast` number, since 401 + 21 + 22 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 222895679 = 4012122222 / (4 + 0 + 1 + 2 + 1 + 2 + 2 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 4012122195 and 4012122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4012122223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111447822 + ... + 111447857.

It is an arithmetic number, because the mean of its divisors is an integer number (724410960).

Almost surely, 2^4012122222 is an apocalyptic number.

4012122222 is an abundant number, since it is smaller than the sum of its proper divisors (4680809298).

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

4012122222 is a wasteful number, since it uses less digits than its factorization.

4012122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222895687 (or 222895684 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4012122222 is about 63341.3152847334. The cubic root of 4012122222 is about 1589.0030037847.

Adding to 4012122222 its reverse (2222212104), we get a palindrome (6234334326).

The spelling of 4012122222 in words is "four billion, twelve million, one hundred twenty-two thousand, two hundred twenty-two".