2132320424221 has 16 divisors (see below), whose sum is σ = 2318355463984. Its totient is φ = 1949509845504.

The previous prime is 2132320424219. The next prime is 2132320424233. The reversal of 2132320424221 is 1224240232312.

It can be written as a sum of positive squares in 8 ways, for example, as 1103789776996 + 1028530647225 = 1050614^2 + 1014165^2 .

It is not a de Polignac number, because 2132320424221 - 2¹ = 2132320424219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2132320424221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2132320424251) 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, 1030086 + ... + 2307751.

It is an arithmetic number, because the mean of its divisors is an integer number (144897216499).

Almost surely, 2^{2132320424221} is an apocalyptic number.

It is an amenable number.

2132320424221 is a deficient number, since it is larger than the sum of its proper divisors (186035039763).

2132320424221 is a wasteful number, since it uses less digits than its factorization.

2132320424221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338320.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 2132320424221 its reverse (1224240232312), we get a palindrome (3356560656533).

The spelling of 2132320424221 in words is "two trillion, one hundred thirty-two billion, three hundred twenty million, four hundred twenty-four thousand, two hundred twenty-one".