1201100220001 has 32 divisors (see below), whose sum is σ = 1340426457216. Its totient is φ = 1067052096000.

The previous prime is 1201100219999. The next prime is 1201100220011. The reversal of 1201100220001 is 1000220011021.

It is not a de Polignac number, because 1201100220001 - 2¹ = 1201100219999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201100220001.

It is not an unprimeable number, because it can be changed into a prime (1201100220011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65066365 + ... + 65084821.

It is an arithmetic number, because the mean of its divisors is an integer number (41888326788).

Almost surely, 2^{1201100220001} is an apocalyptic number.

1201100220001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201100220001 is a deficient number, since it is larger than the sum of its proper divisors (139326237215).

1201100220001 is a wasteful number, since it uses less digits than its factorization.

1201100220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19153.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1201100220001 its reverse (1000220011021), we get a palindrome (2201320231022).

The spelling of 1201100220001 in words is "one trillion, two hundred one billion, one hundred million, two hundred twenty thousand, one".