5220123010221 has 16 divisors (see below), whose sum is σ = 7976630476800. Its totient is φ = 2974618440048.

The previous prime is 5220123010217. The next prime is 5220123010237. The reversal of 5220123010221 is 1220103210225.

It is not a de Polignac number, because 5220123010221 - 2² = 5220123010217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5220123010241) 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, 346200381 + ... + 346215458.

It is an arithmetic number, because the mean of its divisors is an integer number (498539404800).

Almost surely, 2^{5220123010221} is an apocalyptic number.

It is an amenable number.

5220123010221 is a deficient number, since it is larger than the sum of its proper divisors (2756507466579).

5220123010221 is a wasteful number, since it uses less digits than its factorization.

5220123010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692416208.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 5220123010221 its reverse (1220103210225), we get a palindrome (6440226220446).

The spelling of 5220123010221 in words is "five trillion, two hundred twenty billion, one hundred twenty-three million, ten thousand, two hundred twenty-one".