11011120220021 has 12 divisors (see below), whose sum is σ = 11621741230944. Its totient is φ = 10431060978600.

The previous prime is 11011120220017. The next prime is 11011120220029. The reversal of 11011120220021 is 12002202111011.

It is not a de Polignac number, because 11011120220021 - 2² = 11011120220017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011120219978 and 11011120220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011120220029) 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 11 ways as a sum of consecutive naturals, for example, 6485786 + ... + 8005476.

It is an arithmetic number, because the mean of its divisors is an integer number (968478435912).

Almost surely, 2^{11011120220021} is an apocalyptic number.

It is an amenable number.

11011120220021 is a deficient number, since it is larger than the sum of its proper divisors (610621010923).

11011120220021 is a wasteful number, since it uses less digits than its factorization.

11011120220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539800 (or 1539781 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11011120220021 its reverse (12002202111011), we get a palindrome (23013322331032).

The spelling of 11011120220021 in words is "eleven trillion, eleven billion, one hundred twenty million, two hundred twenty thousand, twenty-one".