220021216503 has 8 divisors (see below), whose sum is σ = 320030860416. Its totient is φ = 133346191800.

The previous prime is 220021216489. The next prime is 220021216523. The reversal of 220021216503 is 305612120022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220021216503 - 2⁴ = 220021216487 is a prime.

It is a super-2 number, since 2×220021216503² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220021216523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3333654763 + ... + 3333654828.

It is an arithmetic number, because the mean of its divisors is an integer number (40003857552).

Almost surely, 2^220021216503 is an apocalyptic number.

220021216503 is a deficient number, since it is larger than the sum of its proper divisors (100009643913).

220021216503 is a wasteful number, since it uses less digits than its factorization.

220021216503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6667309605.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 220021216503 its reverse (305612120022), we get a palindrome (525633336525).

The spelling of 220021216503 in words is "two hundred twenty billion, twenty-one million, two hundred sixteen thousand, five hundred three".