11211220220101 has 8 divisors (see below), whose sum is σ = 12230455384800. Its totient is φ = 10191990609840.

The previous prime is 11211220220029. The next prime is 11211220220129. The reversal of 11211220220101 is 10102202211211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11211220220101 - 2¹¹ = 11211220218053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211220220201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3615955 + ... + 5957983.

It is an arithmetic number, because the mean of its divisors is an integer number (1528806923100).

Almost surely, 2^{11211220220101} is an apocalyptic number.

11211220220101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11211220220101 is a deficient number, since it is larger than the sum of its proper divisors (1019235164699).

11211220220101 is a wasteful number, since it uses less digits than its factorization.

11211220220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777219.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11211220220101 its reverse (10102202211211), we get a palindrome (21313422431312).

The spelling of 11211220220101 in words is "eleven trillion, two hundred eleven billion, two hundred twenty million, two hundred twenty thousand, one hundred one".