43144020032121 has 6 divisors (see below), whose sum is σ = 62319140046410. Its totient is φ = 28762680021408.

The previous prime is 43144020032021. The next prime is 43144020032123. The reversal of 43144020032121 is 12123002044134.

43144020032121 is a `hidden beast` number, since 4 + 3 + 1 + 440 + 2 + 0 + 0 + 3 + 212 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 42877417167225 + 266602864896 = 6548085^2 + 516336^2 .

It is not a de Polignac number, because 43144020032121 - 2¹⁴ = 43144020015737 is a prime.

It is a super-2 number, since 2×43144020032121² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43144020032123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2396890001776 + ... + 2396890001793.

Almost surely, 2^{43144020032121} is an apocalyptic number.

It is an amenable number.

43144020032121 is a deficient number, since it is larger than the sum of its proper divisors (19175120014289).

43144020032121 is a wasteful number, since it uses less digits than its factorization.

43144020032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4793780003575 (or 4793780003572 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 43144020032121 its reverse (12123002044134), we get a palindrome (55267022076255).

The spelling of 43144020032121 in words is "forty-three trillion, one hundred forty-four billion, twenty million, thirty-two thousand, one hundred twenty-one".