43020020132021 has 16 divisors (see below), whose sum is σ = 44165905516800. Its totient is φ = 41887025818560.

The previous prime is 43020020132009. The next prime is 43020020132041. The reversal of 43020020132021 is 12023102002034.

It is a cyclic number.

It is not a de Polignac number, because 43020020132021 - 2⁴² = 38621973620917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43020020131984 and 43020020132002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43020020132041) 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, 6240926 + ... + 11179856.

It is an arithmetic number, because the mean of its divisors is an integer number (2760369094800).

Almost surely, 2^{43020020132021} is an apocalyptic number.

It is an amenable number.

43020020132021 is a deficient number, since it is larger than the sum of its proper divisors (1145885384779).

43020020132021 is a wasteful number, since it uses less digits than its factorization.

43020020132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4940236.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 43020020132021 its reverse (12023102002034), we get a palindrome (55043122134055).

The spelling of 43020020132021 in words is "forty-three trillion, twenty billion, twenty million, one hundred thirty-two thousand, twenty-one".