1021201201200 has 120 divisors (see below), whose sum is σ = 3308003787600. Its totient is φ = 269260513280.

The previous prime is 1021201201193. The next prime is 1021201201261. The reversal of 1021201201200 is 21021021201.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4674105 + ... + 4887704.

It is an arithmetic number, because the mean of its divisors is an integer number (27566698230).

Almost surely, 2^{1021201201200} is an apocalyptic number.

1021201201200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021201201200 is an abundant number, since it is smaller than the sum of its proper divisors (2286802586400).

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

1021201201200 is a wasteful number, since it uses less digits than its factorization.

1021201201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9561919 (or 9561908 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1021201201200 its reverse (21021021201), we get a palindrome (1042222222401).

The spelling of 1021201201200 in words is "one trillion, twenty-one billion, two hundred one million, two hundred one thousand, two hundred".