4213566121 has 8 divisors (see below), whose sum is σ = 4490313984. Its totient is φ = 3944614080.

The previous prime is 4213566089. The next prime is 4213566169. The reversal of 4213566121 is 1216653124.

It is a happy number.

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

It is not a de Polignac number, because 4213566121 - 2⁵ = 4213566089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4213569121) 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 7 ways as a sum of consecutive naturals, for example, 1947840 + ... + 1950001.

It is an arithmetic number, because the mean of its divisors is an integer number (561289248).

Almost surely, 2^4213566121 is an apocalyptic number.

It is an amenable number.

4213566121 is a deficient number, since it is larger than the sum of its proper divisors (276747863).

4213566121 is a wasteful number, since it uses less digits than its factorization.

4213566121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897911.

The product of its digits is 8640, while the sum is 31.

The square root of 4213566121 is about 64911.9874984582. The cubic root of 4213566121 is about 1615.1639193721.

The spelling of 4213566121 in words is "four billion, two hundred thirteen million, five hundred sixty-six thousand, one hundred twenty-one".