4013021121 has 8 divisors (see below), whose sum is σ = 5352770304. Its totient is φ = 2674309680.

The previous prime is 4013021099. The next prime is 4013021123. The reversal of 4013021121 is 1211203104.

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

It is not a de Polignac number, because 4013021121 - 2⁷ = 4013020993 is a prime.

It is a super-2 number, since 2×4013021121² = 32208677035184193282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4013021121.

It is not an unprimeable number, because it can be changed into a prime (4013021123) 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, 250366 + ... + 265911.

It is an arithmetic number, because the mean of its divisors is an integer number (669096288).

Almost surely, 2^4013021121 is an apocalyptic number.

It is an amenable number.

4013021121 is a deficient number, since it is larger than the sum of its proper divisors (1339749183).

4013021121 is a wasteful number, since it uses less digits than its factorization.

4013021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518871.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 4013021121 is about 63348.4105641175. The cubic root of 4013021121 is about 1589.1216647221.

Adding to 4013021121 its reverse (1211203104), we get a palindrome (5224224225).

The spelling of 4013021121 in words is "four billion, thirteen million, twenty-one thousand, one hundred twenty-one".