11020111212101 has 8 divisors (see below), whose sum is σ = 11131121978904. Its totient is φ = 10909137715200.

The previous prime is 11020111212037. The next prime is 11020111212113. The reversal of 11020111212101 is 10121211102011.

It can be written as a sum of positive squares in 4 ways, for example, as 9479101804225 + 1541009407876 = 3078815^2 + 1241374^2 .

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 11020111212101 - 2⁶ = 11020111212037 is a prime.

It is a super-2 number, since 2×11020111212101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020111212191) 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, 8722940 + ... + 9906053.

It is an arithmetic number, because the mean of its divisors is an integer number (1391390247363).

Almost surely, 2^{11020111212101} is an apocalyptic number.

It is an amenable number.

11020111212101 is a deficient number, since it is larger than the sum of its proper divisors (111010766803).

11020111212101 is a wasteful number, since it uses less digits than its factorization.

11020111212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18634951.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11020111212101 its reverse (10121211102011), we get a palindrome (21141322314112).

The spelling of 11020111212101 in words is "eleven trillion, twenty billion, one hundred eleven million, two hundred twelve thousand, one hundred one".