1201222221200 has 60 divisors (see below), whose sum is σ = 2947339334400. Its totient is φ = 470265713280.

The previous prime is 1201222221181. The next prime is 1201222221313. The reversal of 1201222221200 is 21222221021.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31928600 + ... + 31966199.

It is an arithmetic number, because the mean of its divisors is an integer number (49122322240).

Almost surely, 2^{1201222221200} is an apocalyptic number.

1201222221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201222221200 is an abundant number, since it is smaller than the sum of its proper divisors (1746117113200).

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

1201222221200 is a wasteful number, since it uses less digits than its factorization.

1201222221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63894864 (or 63894853 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1201222221200 its reverse (21222221021), we get a palindrome (1222444442221).

The spelling of 1201222221200 in words is "one trillion, two hundred one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred".