201001200121320 has 64 divisors (see below), whose sum is σ = 603018092888640. Its totient is φ = 53599031808000.

The previous prime is 201001200121301. The next prime is 201001200121321. The reversal of 201001200121320 is 23121002100102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201001200121320.

It is not an unprimeable number, because it can be changed into a prime (201001200121321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15109561 + ... + 25105800.

It is an arithmetic number, because the mean of its divisors is an integer number (9422157701385).

Almost surely, 2^{201001200121320} is an apocalyptic number.

201001200121320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201001200121320 is an abundant number, since it is smaller than the sum of its proper divisors (402016892767320).

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

201001200121320 is a wasteful number, since it uses less digits than its factorization.

201001200121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40257026 (or 40257022 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201001200121320 its reverse (23121002100102), we get a palindrome (224122202221422).

The spelling of 201001200121320 in words is "two hundred one trillion, one billion, two hundred million, one hundred twenty-one thousand, three hundred twenty".