203312121203220 has 96 divisors (see below), whose sum is σ = 571140983952000. Its totient is φ = 54038759768064.

The previous prime is 203312121203201. The next prime is 203312121203251. The reversal of 203312121203220 is 22302121213302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1086852256 + ... + 1087039304.

It is an arithmetic number, because the mean of its divisors is an integer number (5949385249500).

Almost surely, 2^{203312121203220} is an apocalyptic number.

203312121203220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203312121203220 is an abundant number, since it is smaller than the sum of its proper divisors (367828862748780).

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

203312121203220 is a wasteful number, since it uses less digits than its factorization.

203312121203220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246377 (or 246375 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 203312121203220 its reverse (22302121213302), we get a palindrome (225614242416522).

The spelling of 203312121203220 in words is "two hundred three trillion, three hundred twelve billion, one hundred twenty-one million, two hundred three thousand, two hundred twenty".