11011100211021 has 16 divisors (see below), whose sum is σ = 15040237863168. Its totient is φ = 7161364358400.

The previous prime is 11011100211011. The next prime is 11011100211061. The reversal of 11011100211021 is 12011200111011.

It is not a de Polignac number, because 11011100211021 - 2¹¹ = 11011100208973 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11011100210988 and 11011100211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011100211011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 678105 + ... + 4741521.

It is an arithmetic number, because the mean of its divisors is an integer number (940014866448).

Almost surely, 2^{11011100211021} is an apocalyptic number.

It is an amenable number.

11011100211021 is a deficient number, since it is larger than the sum of its proper divisors (4029137652147).

11011100211021 is a wasteful number, since it uses less digits than its factorization.

11011100211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4085492.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11011100211021 its reverse (12011200111011), we get a palindrome (23022300322032).

The spelling of 11011100211021 in words is "eleven trillion, eleven billion, one hundred million, two hundred eleven thousand, twenty-one".