2151121043 has 8 divisors (see below), whose sum is σ = 2291620800. Its totient is φ = 2013349608.

The previous prime is 2151121033. The next prime is 2151121057. The reversal of 2151121043 is 3401211512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151121043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151121033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680453 + ... + 683606.

It is an arithmetic number, because the mean of its divisors is an integer number (286452600).

Almost surely, 2^2151121043 is an apocalyptic number.

2151121043 is a deficient number, since it is larger than the sum of its proper divisors (140499757).

2151121043 is a wasteful number, since it uses less digits than its factorization.

2151121043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364161.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2151121043 is about 46380.1794196616. The cubic root of 2151121043 is about 1290.8871655087.

Adding to 2151121043 its reverse (3401211512), we get a palindrome (5552332555).

The spelling of 2151121043 in words is "two billion, one hundred fifty-one million, one hundred twenty-one thousand, forty-three".