11211001220001 has 32 divisors (see below), whose sum is σ = 16895847581568. Its totient is φ = 6552406103040.

The previous prime is 11211001219963. The next prime is 11211001220033. The reversal of 11211001220001 is 10002210011211.

11211001220001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11211001220001 - 2¹¹ = 11211001217953 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11211001220201) 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, 40489546 + ... + 40765491.

It is an arithmetic number, because the mean of its divisors is an integer number (527995236924).

Almost surely, 2^{11211001220001} is an apocalyptic number.

11211001220001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11211001220001 is a deficient number, since it is larger than the sum of its proper divisors (5684846361567).

11211001220001 is a wasteful number, since it uses less digits than its factorization.

11211001220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81255201.

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

Adding to 11211001220001 its reverse (10002210011211), we get a palindrome (21213211231212).

The spelling of 11211001220001 in words is "eleven trillion, two hundred eleven billion, one million, two hundred twenty thousand, one".