4121213231 has 4 divisors (see below), whose sum is σ = 4125372864. Its totient is φ = 4117053600.

The previous prime is 4121213203. The next prime is 4121213249. The reversal of 4121213231 is 1323121214.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1323121214 = 2 ⋅661560607.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4121213231 is a prime.

It is a super-2 number, since 2×4121213231² = 33968796990738918722, 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 (4121213251) 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 3 ways as a sum of consecutive naturals, for example, 2078330 + ... + 2080311.

It is an arithmetic number, because the mean of its divisors is an integer number (1031343216).

Almost surely, 2^4121213231 is an apocalyptic number.

4121213231 is a deficient number, since it is larger than the sum of its proper divisors (4159633).

4121213231 is an equidigital number, since it uses as much as digits as its factorization.

4121213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4159632.

The product of its digits is 288, while the sum is 20.

The square root of 4121213231 is about 64196.6761678516. The cubic root of 4121213231 is about 1603.2762595346.

Adding to 4121213231 its reverse (1323121214), we get a palindrome (5444334445).

The spelling of 4121213231 in words is "four billion, one hundred twenty-one million, two hundred thirteen thousand, two hundred thirty-one".