4123401221 has 16 divisors (see below), whose sum is σ = 4557999600. Its totient is φ = 3712601088.

The previous prime is 4123401211. The next prime is 4123401229. The reversal of 4123401221 is 1221043214.

4123401221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1496838721 + 2626562500 = 38689^2 + 51250^2 .

It is a cyclic number.

It is not a de Polignac number, because 4123401221 - 2⁶ = 4123401157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4123401193 and 4123401202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4123401229) 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, 15371 + ... + 92103.

It is an arithmetic number, because the mean of its divisors is an integer number (284874975).

Almost surely, 2^4123401221 is an apocalyptic number.

It is an amenable number.

4123401221 is a deficient number, since it is larger than the sum of its proper divisors (434598379).

4123401221 is a wasteful number, since it uses less digits than its factorization.

4123401221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76888.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4123401221 is about 64213.7152094473. The cubic root of 4123401221 is about 1603.5599407071.

Adding to 4123401221 its reverse (1221043214), we get a palindrome (5344444435).

The spelling of 4123401221 in words is "four billion, one hundred twenty-three million, four hundred one thousand, two hundred twenty-one".