1200320201100 has 72 divisors (see below), whose sum is σ = 3473884493968. Its totient is φ = 319997088000.

The previous prime is 1200320201099. The next prime is 1200320201149. The reversal of 1200320201100 is 11020230021.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 541050 + ... + 1641150.

Almost surely, 2^{1200320201100} is an apocalyptic number.

1200320201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200320201100 is an abundant number, since it is smaller than the sum of its proper divisors (2273564292868).

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

1200320201100 is a wasteful number, since it uses less digits than its factorization.

1200320201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103755 (or 1103748 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1200320201100 its reverse (11020230021), we get a palindrome (1211340431121).

The spelling of 1200320201100 in words is "one trillion, two hundred billion, three hundred twenty million, two hundred one thousand, one hundred".