43011430020121 has 4 divisors (see below), whose sum is σ = 43011467324452. Its totient is φ = 43011392715792.

The previous prime is 43011430020067. The next prime is 43011430020137. The reversal of 43011430020121 is 12102003411034.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37303559536896 + 5707870483225 = 6107664^2 + 2389115^2 .

It is a cyclic number.

It is not a de Polignac number, because 43011430020121 - 2⁷ = 43011430019993 is a prime.

It is a super-2 number, since 2×43011430020121² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43011430020092 and 43011430020101.

It is not an unprimeable number, because it can be changed into a prime (43011430029121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16865646 + ... + 19247671.

It is an arithmetic number, because the mean of its divisors is an integer number (10752866831113).

Almost surely, 2^{43011430020121} is an apocalyptic number.

It is an amenable number.

43011430020121 is a deficient number, since it is larger than the sum of its proper divisors (37304331).

43011430020121 is a wasteful number, since it uses less digits than its factorization.

43011430020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37304330.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 43011430020121 its reverse (12102003411034), we get a palindrome (55113433431155).

The spelling of 43011430020121 in words is "forty-three trillion, eleven billion, four hundred thirty million, twenty thousand, one hundred twenty-one".