11011211201020 has 12 divisors (see below), whose sum is σ = 23123543522184. Its totient is φ = 4404484480400.

The previous prime is 11011211200993. The next prime is 11011211201021. The reversal of 11011211201020 is 2010211211011.

It is a happy number.

It is a super-2 number, since 2×11011211201020² (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 (11011211201021) 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 3 ways as a sum of consecutive naturals, for example, 275280280006 + ... + 275280280045.

It is an arithmetic number, because the mean of its divisors is an integer number (1926961960182).

Almost surely, 2^{11011211201020} is an apocalyptic number.

11011211201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011211201020 is an abundant number, since it is smaller than the sum of its proper divisors (12112332321164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11011211201020 is a wasteful number, since it uses less digits than its factorization.

11011211201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550560560060 (or 550560560058 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11011211201020 its reverse (2010211211011), we get a palindrome (13021422412031).

Subtracting from 11011211201020 its reverse (2010211211011), we obtain a palindrome (9000999990009).

The spelling of 11011211201020 in words is "eleven trillion, eleven billion, two hundred eleven million, two hundred one thousand, twenty".