4221100121 has 8 divisors (see below), whose sum is σ = 4824732864. Its totient is φ = 3617622000.

The previous prime is 4221100111. The next prime is 4221100141. The reversal of 4221100121 is 1210011224.

It is a happy number.

4221100121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4221100121 - 2⁶ = 4221100057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4221100096 and 4221100105.

It is not an unprimeable number, because it can be changed into a prime (4221100111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27371 + ... + 95871.

It is an arithmetic number, because the mean of its divisors is an integer number (603091608).

Almost surely, 2^4221100121 is an apocalyptic number.

It is an amenable number.

4221100121 is a deficient number, since it is larger than the sum of its proper divisors (603632743).

4221100121 is an equidigital number, since it uses as much as digits as its factorization.

4221100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77311.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 4221100121 is about 64969.9940049251. The cubic root of 4221100121 is about 1616.1260022542.

Adding to 4221100121 its reverse (1210011224), we get a palindrome (5431111345).

The spelling of 4221100121 in words is "four billion, two hundred twenty-one million, one hundred thousand, one hundred twenty-one".