221320230032220 has 48 divisors (see below), whose sum is σ = 676032702645888. Its totient is φ = 53653389098560.

The previous prime is 221320230032197. The next prime is 221320230032243. The reversal of 221320230032220 is 22230032023122.

It is an interprime number because it is at equal distance from previous prime (221320230032197) and next prime (221320230032243).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167666840274 + ... + 167666841593.

It is an arithmetic number, because the mean of its divisors is an integer number (14084014638456).

Almost surely, 2^{221320230032220} is an apocalyptic number.

221320230032220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221320230032220 is an abundant number, since it is smaller than the sum of its proper divisors (454712472613668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221320230032220 is a wasteful number, since it uses less digits than its factorization.

221320230032220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335333681890 (or 335333681888 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 221320230032220 its reverse (22230032023122), we get a palindrome (243550262055342).

The spelling of 221320230032220 in words is "two hundred twenty-one trillion, three hundred twenty billion, two hundred thirty million, thirty-two thousand, two hundred twenty".