201231220203320 has 16 divisors (see below), whose sum is σ = 452770245457560. Its totient is φ = 80492488081312.

The previous prime is 201231220203319. The next prime is 201231220203367. The reversal of 201231220203320 is 23302022132102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2515390252502 + ... + 2515390252581.

Almost surely, 2^{201231220203320} is an apocalyptic number.

201231220203320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201231220203320 is an abundant number, since it is smaller than the sum of its proper divisors (251539025254240).

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

201231220203320 is a wasteful number, since it uses less digits than its factorization.

201231220203320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5030780505094 (or 5030780505090 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 201231220203320 its reverse (23302022132102), we get a palindrome (224533242335422).

The spelling of 201231220203320 in words is "two hundred one trillion, two hundred thirty-one billion, two hundred twenty million, two hundred three thousand, three hundred twenty".