220320121300 has 36 divisors (see below), whose sum is σ = 484828406496. Its totient is φ = 86886805600.

The previous prime is 220320121291. The next prime is 220320121303. The reversal of 220320121300 is 3121023022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220320121303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15508402 + ... + 15522601.

It is an arithmetic number, because the mean of its divisors is an integer number (13467455736).

Almost surely, 2^220320121300 is an apocalyptic number.

220320121300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220320121300 is an abundant number, since it is smaller than the sum of its proper divisors (264508285196).

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

220320121300 is a wasteful number, since it uses less digits than its factorization.

220320121300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31031088 (or 31031081 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 220320121300 its reverse (3121023022), we get a palindrome (223441144322).

The spelling of 220320121300 in words is "two hundred twenty billion, three hundred twenty million, one hundred twenty-one thousand, three hundred".