4200121222 has 16 divisors (see below), whose sum is σ = 6874155072. Its totient is φ = 1908804520.

The previous prime is 4200121187. The next prime is 4200121223. The reversal of 4200121222 is 2221210024.

4200121222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 4200121196 and 4200121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4200121223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141393 + ... + 168499.

It is an arithmetic number, because the mean of its divisors is an integer number (429634692).

Almost surely, 2^4200121222 is an apocalyptic number.

4200121222 is a deficient number, since it is larger than the sum of its proper divisors (2674033850).

4200121222 is a wasteful number, since it uses less digits than its factorization.

4200121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34163.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 4200121222 is about 64808.3422253648. The cubic root of 4200121222 is about 1613.4441683393. Note that the first 3 decimals are identical.

Adding to 4200121222 its reverse (2221210024), we get a palindrome (6421331246).

The spelling of 4200121222 in words is "four billion, two hundred million, one hundred twenty-one thousand, two hundred twenty-two".