2011143222 has 32 divisors (see below), whose sum is σ = 4875500160. Its totient is φ = 609437160.

The previous prime is 2011143187. The next prime is 2011143229. The reversal of 2011143222 is 2223411102.

It is a happy number.

2011143222 is a `hidden beast` number, since 201 + 11 + 432 + 22 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 2011143195 and 2011143204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011143229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1692288 + ... + 1693475.

It is an arithmetic number, because the mean of its divisors is an integer number (152359380).

Almost surely, 2^2011143222 is an apocalyptic number.

2011143222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2011143222 is an abundant number, since it is smaller than the sum of its proper divisors (2864356938).

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

2011143222 is a wasteful number, since it uses less digits than its factorization.

2011143222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3385785 (or 3385779 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2011143222 is about 44845.7715063527. The cubic root of 2011143222 is about 1262.2566475636.

Adding to 2011143222 its reverse (2223411102), we get a palindrome (4234554324).

The spelling of 2011143222 in words is "two billion, eleven million, one hundred forty-three thousand, two hundred twenty-two".