1201222101100 has 72 divisors (see below), whose sum is σ = 3048310673408. Its totient is φ = 402269716800.

The previous prime is 1201222101089. The next prime is 1201222101151. The reversal of 1201222101100 is 11012221021.

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, 19923756 + ... + 19983955.

Almost surely, 2^{1201222101100} is an apocalyptic number.

1201222101100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201222101100 is an abundant number, since it is smaller than the sum of its proper divisors (1847088572308).

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

1201222101100 is a wasteful number, since it uses less digits than its factorization.

1201222101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39907775 (or 39907768 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1201222101100 its reverse (11012221021), we get a palindrome (1212234322121).

It can be divided in two parts, 120122 and 2101100, that added together give a palindrome (2221222).

The spelling of 1201222101100 in words is "one trillion, two hundred one billion, two hundred twenty-two million, one hundred one thousand, one hundred".