20121143241 has 16 divisors (see below), whose sum is σ = 28345204800. Its totient is φ = 12660838848.

The previous prime is 20121143239. The next prime is 20121143243. The reversal of 20121143241 is 14234112102.

It is an interprime number because it is at equal distance from previous prime (20121143239) and next prime (20121143243).

It is not a de Polignac number, because 20121143241 - 2¹ = 20121143239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20121143243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640806 + ... + 671471.

It is an arithmetic number, because the mean of its divisors is an integer number (1771575300).

Almost surely, 2^20121143241 is an apocalyptic number.

It is an amenable number.

20121143241 is a deficient number, since it is larger than the sum of its proper divisors (8224061559).

20121143241 is a wasteful number, since it uses less digits than its factorization.

20121143241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312568.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 20121143241 its reverse (14234112102), we get a palindrome (34355255343).

The spelling of 20121143241 in words is "twenty billion, one hundred twenty-one million, one hundred forty-three thousand, two hundred forty-one".