1201222001200 has 60 divisors (see below), whose sum is σ = 3107930937328. Its totient is φ = 443528121600.

The previous prime is 1201222001197. The next prime is 1201222001209. The reversal of 1201222001200 is 21002221021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1201222001209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115496916 + ... + 115507315.

Almost surely, 2^{1201222001200} is an apocalyptic number.

1201222001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201222001200 is an abundant number, since it is smaller than the sum of its proper divisors (1906708936128).

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

1201222001200 is a wasteful number, since it uses less digits than its factorization.

1201222001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231004262 (or 231004251 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1201222001200 its reverse (21002221021), we get a palindrome (1222224222221).

The spelling of 1201222001200 in words is "one trillion, two hundred one billion, two hundred twenty-two million, one thousand, two hundred".