11101220102001 has 16 divisors (see below), whose sum is σ = 15212838852864. Its totient is φ = 7197213289344.

The previous prime is 11101220101999. The next prime is 11101220102053. The reversal of 11101220102001 is 10020102210111.

It is not a de Polignac number, because 11101220102001 - 2¹ = 11101220101999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11101220102081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250716900 + ... + 250761173.

It is an arithmetic number, because the mean of its divisors is an integer number (950802428304).

Almost surely, 2^{11101220102001} is an apocalyptic number.

It is an amenable number.

11101220102001 is a deficient number, since it is larger than the sum of its proper divisors (4111618750863).

11101220102001 is a wasteful number, since it uses less digits than its factorization.

11101220102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501478280.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11101220102001 its reverse (10020102210111), we get a palindrome (21121322312112).

The spelling of 11101220102001 in words is "eleven trillion, one hundred one billion, two hundred twenty million, one hundred two thousand, one".