4154135221 has 4 divisors (see below), whose sum is σ = 4154297152. Its totient is φ = 4153973292.

The previous prime is 4154135213. The next prime is 4154135231. The reversal of 4154135221 is 1225314514.

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 4154135221 - 2³ = 4154135213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4154135221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4154135201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33021 + ... + 96946.

It is an arithmetic number, because the mean of its divisors is an integer number (1038574288).

Almost surely, 2^4154135221 is an apocalyptic number.

It is an amenable number.

4154135221 is a deficient number, since it is larger than the sum of its proper divisors (161931).

4154135221 is a wasteful number, since it uses less digits than its factorization.

4154135221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161930.

The product of its digits is 4800, while the sum is 28.

The square root of 4154135221 is about 64452.5811818270. The cubic root of 4154135221 is about 1607.5341573445.

Adding to 4154135221 its reverse (1225314514), we get a palindrome (5379449735).

The spelling of 4154135221 in words is "four billion, one hundred fifty-four million, one hundred thirty-five thousand, two hundred twenty-one".