1001220001100 has 72 divisors (see below), whose sum is σ = 2400163046400. Its totient is φ = 359471361600.

The previous prime is 1001220001097. The next prime is 1001220001123. The reversal of 1001220001100 is 11000221001.

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, 5673860 + ... + 5847659.

Almost surely, 2^{1001220001100} is an apocalyptic number.

1001220001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001220001100 is an abundant number, since it is smaller than the sum of its proper divisors (1398943045300).

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

1001220001100 is a wasteful number, since it uses less digits than its factorization.

1001220001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11521623 (or 11521616 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1001220001100 its reverse (11000221001), we get a palindrome (1012220222101).

The spelling of 1001220001100 in words is "one trillion, one billion, two hundred twenty million, one thousand, one hundred".