4161231021 has 8 divisors (see below), whose sum is σ = 5840324320. Its totient is φ = 2628145872.

The previous prime is 4161230951. The next prime is 4161231043. The reversal of 4161231021 is 1201321614.

4161231021 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 sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4161231021 - 2⁷ = 4161230893 is a prime.

It is a super-2 number, since 2×4161231021² = 34631687220265404882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4161231071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36501970 + ... + 36502083.

It is an arithmetic number, because the mean of its divisors is an integer number (730040540).

Almost surely, 2^4161231021 is an apocalyptic number.

It is an amenable number.

4161231021 is a deficient number, since it is larger than the sum of its proper divisors (1679093299).

4161231021 is a wasteful number, since it uses less digits than its factorization.

4161231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73004075.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 4161231021 is about 64507.6043656870. The cubic root of 4161231021 is about 1608.4489287465.

Adding to 4161231021 its reverse (1201321614), we get a palindrome (5362552635).

The spelling of 4161231021 in words is "four billion, one hundred sixty-one million, two hundred thirty-one thousand, twenty-one".