4121101221 has 4 divisors (see below), whose sum is σ = 5494801632. Its totient is φ = 2747400812.

The previous prime is 4121101217. The next prime is 4121101241. The reversal of 4121101221 is 1221011214.

4121101221 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4121101221 - 2² = 4121101217 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4121101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4121101241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686850201 + ... + 686850206.

It is an arithmetic number, because the mean of its divisors is an integer number (1373700408).

Almost surely, 2^4121101221 is an apocalyptic number.

It is an amenable number.

4121101221 is a deficient number, since it is larger than the sum of its proper divisors (1373700411).

4121101221 is a wasteful number, since it uses less digits than its factorization.

4121101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373700410.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 4121101221 is about 64195.8037647322. The cubic root of 4121101221 is about 1603.2617343134.

Adding to 4121101221 its reverse (1221011214), we get a palindrome (5342112435).

The spelling of 4121101221 in words is "four billion, one hundred twenty-one million, one hundred one thousand, two hundred twenty-one".