2120432413021 has 16 divisors (see below), whose sum is σ = 2417970970800. Its totient is φ = 1842107655168.

The previous prime is 2120432413003. The next prime is 2120432413087. The reversal of 2120432413021 is 1203142340212.

It can be written as a sum of positive squares in 8 ways, for example, as 391549296121 + 1728883116900 = 625739^2 + 1314870^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120432413021 - 2¹¹ = 2120432410973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120432413091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5376315 + ... + 5757223.

It is an arithmetic number, because the mean of its divisors is an integer number (151123185675).

Almost surely, 2^{2120432413021} is an apocalyptic number.

It is an amenable number.

2120432413021 is a deficient number, since it is larger than the sum of its proper divisors (297538557779).

2120432413021 is a wasteful number, since it uses less digits than its factorization.

2120432413021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406128.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 2120432413021 its reverse (1203142340212), we get a palindrome (3323574753233).

The spelling of 2120432413021 in words is "two trillion, one hundred twenty billion, four hundred thirty-two million, four hundred thirteen thousand, twenty-one".