4000121311 has 8 divisors (see below), whose sum is σ = 4170378960. Its totient is φ = 3833374272.

The previous prime is 4000121309. The next prime is 4000121317. The reversal of 4000121311 is 1131210004.

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

It is a cyclic number.

It is not a de Polignac number, because 4000121311 - 2¹ = 4000121309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4000121291 and 4000121300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000121317) 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, 875326 + ... + 879883.

It is an arithmetic number, because the mean of its divisors is an integer number (521297370).

Almost surely, 2^4000121311 is an apocalyptic number.

4000121311 is a deficient number, since it is larger than the sum of its proper divisors (170257649).

4000121311 is a wasteful number, since it uses less digits than its factorization.

4000121311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755305.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 4000121311 is about 63246.5122437593. The cubic root of 4000121311 is about 1587.4170992401.

Adding to 4000121311 its reverse (1131210004), we get a palindrome (5131331315).

The spelling of 4000121311 in words is "four billion, one hundred twenty-one thousand, three hundred eleven".