5212002171221 has 24 divisors (see below), whose sum is σ = 5572948549704. Its totient is φ = 4873301360640.

The previous prime is 5212002171179. The next prime is 5212002171251. The reversal of 5212002171221 is 1221712002125.

It can be written as a sum of positive squares in 12 ways, for example, as 146738794225 + 5065263376996 = 383065^2 + 2250614^2 .

It is not a de Polignac number, because 5212002171221 - 2¹⁴ = 5212002154837 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 (5212002171251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40820801 + ... + 40948281.

It is an arithmetic number, because the mean of its divisors is an integer number (232206189571).

Almost surely, 2^{5212002171221} is an apocalyptic number.

It is an amenable number.

5212002171221 is a deficient number, since it is larger than the sum of its proper divisors (360946378483).

5212002171221 is a wasteful number, since it uses less digits than its factorization.

5212002171221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128441 (or 128424 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 5212002171221 its reverse (1221712002125), we get a palindrome (6433714173346).

The spelling of 5212002171221 in words is "five trillion, two hundred twelve billion, two million, one hundred seventy-one thousand, two hundred twenty-one".