4000233432121 has 2 divisors, whose sum is σ = 4000233432122. Its totient is φ = 4000233432120.

The previous prime is 4000233432119. The next prime is 4000233432127. The reversal of 4000233432121 is 1212343320004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3026190764025 + 974042668096 = 1739595^2 + 986936^2 .

It is a cyclic number.

It is not a de Polignac number, because 4000233432121 - 2¹ = 4000233432119 is a prime.

It is a super-2 number, since 2×4000233432121² (a number of 26 digits) contains 22 as substring.

Together with 4000233432119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4000233432127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000116716060 + 2000116716061.

It is an arithmetic number, because the mean of its divisors is an integer number (2000116716061).

Almost surely, 2^{4000233432121} is an apocalyptic number.

It is an amenable number.

4000233432121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000233432121 is an equidigital number, since it uses as much as digits as its factorization.

4000233432121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 4000233432121 its reverse (1212343320004), we get a palindrome (5212576752125).

The spelling of 4000233432121 in words is "four trillion, two hundred thirty-three million, four hundred thirty-two thousand, one hundred twenty-one".